Wikipedia:WikiProject Wales/Article List
- Grade II* listed buildings in Monmouthshire
- Grade I listed buildings in Monmouthshire
- Roald Dahl bibliography
- Cymru Premier Golden Boot
- Friends of Friendless Churches
- Grade I listed buildings in Rhondda Cynon Taf
- List of Cardiff City F.C. managers
- List of Cardiff City F.C. players
- List of Cardiff City F.C. players (25–99 appearances)
- List of Cardiff City F.C. records and statistics
- List of Cardiff City F.C. seasons
- List of County Court venues in England and Wales
- List of Cymru Premier clubs
- List of Honorary Fellows of Jesus College, Oxford
- List of Wales international footballers
- List of Wales national football team hat-tricks
- List of alumni of Jesus College, Oxford
- List of clergy educated at Jesus College, Oxford
- List of former county courts in Wales
- List of founding Fellows, Scholars and Commissioners of Jesus College, Oxford
- List of international goals scored by Gareth Bale
- List of international goals scored by Ian Rush
- List of mathematicians, physicians, and scientists educated at Jesus College, Oxford
- List of new churches by John Douglas
- List of politicians, lawyers, and civil servants educated at Jesus College, Oxford
- List of principals and fellows of Jesus College, Oxford
- List of roles and awards of Catherine Zeta-Jones
- Registered historic parks and gardens in Monmouthshire
- Wales national football team results (1876–1899)
- Wales national football team results (1920–1939)
- Wales national football team results (1946–1959)
- Aneurin Bevan
- Carmarthenshire
- Ceredigion
- Charles III
- Dylan Thomas
- Millennium Stadium
- Pembrokeshire
- Snowdon
- Wales
- Barry Docks
- Barry John
- Brian Josephson
- Caernarfon Castle
- Cardiff Castle
- Castles and Town Walls of King Edward in Gwynedd
- Catherine, Princess of Wales
- Conwy Castle
- Geography of Wales
- Harlech Castle
- Joseph Parry
- Llandaff Cathedral
- Mari Lwyd
- Senedd building
- Wales Millennium Centre
- Welsh Corgi
- Welsh National Opera
- Welsh cuisine
- William, Prince of Wales
- Woollen industry in Wales
- 2007 Welsh Open (snooker)
- Agriculture in Wales
- Anglesey Central Railway
- Beaumaris Castle
- Bullet for My Valentine
- Caerphilly Castle
- Ched Evans
- Clwyd
- Craig Bellamy
- Criccieth Castle
- Cwm, Llanrothal
- Cymmer Colliery explosion
- Diana, Princess of Wales
- Dolwyddelan Castle
- Ebbw Valley Railway
- Flat Holm
- Fred Dyer
- George Insole
- Grosmont Castle
- Hay Castle
- Herbert Armitage James
- Hilston Park
- Hubert William Lewis
- Ivor Allchurch
- James Harvey Insole
- Jamie Arthur
- John McFall (athlete)
- John Toshack
- Jonathan Pryce
- Jonny Buckland
- Julia Gillard
- Kidwelly and Llanelly Canal
- Llantwit Major
- Marina Diamandis
- Michael Sheen
- Milford Haven
- Neath and Tennant Canal
- Parc Cwm long cairn
- Pennard Castle
- Powis Castle
- Raglan Castle
- Rhyl Pier
- Skenfrith Castle
- St Mary's Church, Tal-y-llyn
- Thomas Pennant
- Welsh Pony and Cob
- Welsh Springer Spaniel
- White Castle, Monmouthshire
- Women's suffrage in Wales
- Y Gododdin
- (Drawing) Rings Around the World
- 1927 FA Charity Shield
- 1958 FIFA World Cup qualification (AFC/CAF–UEFA play-off)
- 1999 Welsh Conservatives leadership election
- 2006 Heineken Cup final
- 2006 World Cup of Pool
- 2021 Welsh Open (snooker)
- A4061 road
- Aberdaron
- Active-class cruiser
- Adrift (Torchwood)
- Alex Lawless
- Andrew Crofts (footballer)
- Barmouth Bridge
- Beatrice Green
- Billy Geen
- Blonde-class cruiser
- Boadicea-class cruiser
- Caernarfon town walls
- Caffo
- Capel Lligwy
- Castell y Bere
- Catatonia (band)
- Charles Wilkins (writer)
- Clement of Llanthony
- Constantine (Briton)
- Conwy town walls
- Curriculum for Wales (2022–present)
- Cynfarwy
- Daniel Parslow
- David Watts Morgan
- Delyth Evans
- Dion Fortune
- Dolbadarn Castle
- East and West Blockhouses
- Eidyn
- Elizabeth Randles
- Emilia Baeyertz
- English Poor Laws
- G. E. L. Owen
- Glamorgan sausage
- Golden Retriever (song)
- Goronwy ap Tudur Hen
- Gwen Cooper
- HMS Active (1911)
- HMS Ajax (1880)
- HMS Amphion (1911)
- HMS Andromeda (1897)
- HMS Anson (1886)
- HMS Aurora (1887)
- HMS Bellona (1909)
- HMS Blanche (1909)
- HMS Blonde (1910)
- HMS Boadicea (1908)
- HMS Cambrian (1916)
- HMS Caradoc (D60)
- HMS Cardiff (D58)
- HMS Carysfort (1914)
- HMS Collingwood (1882)
- HMS Cordelia (1914)
- HMS Cornwall (1902)
- HMS Denbigh Castle (K696)
- HMS Dreadnought (1875)
- HMS Essex (1901)
- HMS Fearless (1912)
- HMS Flint Castle (K383)
- HMS Howe (1885)
- HMS Inconstant (1868)
- HMS Iron Duke (1870)
- HMS Nile (1888)
- HMS Nottingham (1913)
- HMS Penelope (1867)
- HMS Prince of Wales (1902)
- HMS Thisbe (1824)
- HMS Thunderer (1872)
- Hello Sunshine (Super Furry Animals song)
- Hervey le Breton
- Hilda Vaughan
- Historia Divae Monacellae
- Humphrey de Bohun, 3rd Earl of Hereford
- Huw Edwards (conductor)
- Infant school
- It's Not the End of the World?
- Jazz Richards
- John Williams (snooker referee)
- Johnny Williams (rugby union, born 1882)
- Juxtapozed with U
- Kyle Critchell
- Levi Mackin
- Llanishen Reservoir
- Loughor Castle
- Mark Aizlewood
- Martha Hughes Cannon
- Mary Dilys Glynne
- Meat (Torchwood)
- Melangell
- Monmouth School for Boys
- Mwng
- Newport Association Football Club Ltd and others v Football Association of Wales Ltd
- Newton House, Llandeilo
- Nidan
- Norman Biggs
- O'er the Gloomy Hills of Darkness
- Old Bridge, Pontypridd
- Old Church of St Gwenllwyfo, Llanwenllwyfo
- Our Lady Star of the Sea and St Winefride, Amlwch
- Park Hall (Oswestry)
- Penmon
- Penrhyn Castle
- Phantom Phorce
- Phantom Power (Super Furry Animals album)
- Plas Mawr
- Pont-y-Cafnau
- Rachel Barrett
- Radyr
- Rakie Ayola
- Rhys Weston
- Rhys Williams (Torchwood)
- Richard Garnons Williams
- Rings Around the World
- Sealyham Terrier
- Sherlock (TV series)
- Shrewsbury Drapers Company
- Sibyl de Neufmarché
- Sir William James, 1st Baronet
- Slow Life
- Something Borrowed (Torchwood)
- South Wales derby
- St Beuno's Church, Aberffraw
- St Beuno's Church, Trefdraeth
- St Caffo's Church, Llangaffo
- St Caian's Church, Tregaian
- St Ceidio's Church, Rhodogeidio
- St Ceinwen's Church, Cerrigceinwen
- St Cristiolus's Church, Llangristiolus
- St Cwyllog's Church, Llangwyllog
- St Cynfarwy's Church, Llechgynfarwy
- St Deiniol's Church, Llanddaniel Fab
- St Dona's Church, Llanddona
- St Edern's Church, Bodedern
- St Edwen's Church, Llanedwen
- St Eleth's Church, Amlwch
- St Enghenedl's Church, Llanynghenedl
- St Eugrad's Church, Llaneugrad
- St Ffinan's Church, Llanffinan
- St Fflewin's Church, Llanfflewin
- St Gallgo's Church, Llanallgo
- St Gwenllwyfo's Church
- St Iestyn's Church, Llaniestyn
- St Llibio's Church, Llanllibio
- St Mary's Church, Bodewryd
- St Mary's Church, Llanfair-yn-y-Cwmwd
- St Mary's Church, Llanfair-yng-Nghornwy
- St Mary's Church, Llanfair Mathafarn Eithaf
- St Mary's Church, Pentraeth
- St Mary's Church, Rhodogeidio
- St Michael's Church, Llanfihangel Ysgeifiog
- St Mihangel's Church, Llanfihangel yn Nhowyn
- St Nidan's Church, Llanidan
- St Pabo's Church, Llanbabo
- St Peirio's Church, Rhosbeirio
- St Peter's Church, Llanbedrgoch
- St Peulan's Church, Llanbeulan
- St Twrog's Church, Bodwrog
- St Tyfrydog's Church, Llandyfrydog
- T. E. Lawrence
- The Checkers (restaurant)
- The Holy Bible (album)
- The Red Dragon (magazine)
- The Tale of the Flopsy Bunnies
- The Whitebrook
- Thomas Stephens (historian)
- Three Castles
- Timothy Everest
- To the Last Man (Torchwood)
- Tudur Hen
- Walter de Clare
- Wrexham A.F.C. 2–1 Arsenal F.C.
- Jess Fishlock
- Ryland Davies
- Tom Cole (racing driver)
- Anglesey
- Cardiff
- Flag of the United Kingdom
- Flintshire
- Glamorgan
- Great Britain
- Gruffudd ap Cynan
- Gwynedd
- History of Wales
- Kingdom of Gwynedd
- Local Government (Wales) Act 1994
- Merthyr Tydfil
- Newport, Wales
- Owain Glyndŵr
- Plaid Cymru
- Prince of Wales
- Senedd
- Welsh devolution
- Welsh people
- 1999 Rugby World Cup
- Anthony Hopkins
- Beaumaris town walls
- Caernarfon
- Cardiff Arms Park
- Celtic languages
- Celts
- Celts (modern)
- Coastline of Wales
- Colloquial Welsh morphology
- Conquest of Wales by Edward I
- Duffy (singer)
- Gareth Bale
- Gavin & Stacey
- Geology of Wales
- Glyndŵr rebellion
- Glynis Johns
- Great Western Main Line upgrade
- Hay-on-Wye
- History of Cardiff
- History of Plaid Cymru
- House of Aberffraw
- House of Tudor
- Irish Sea
- Ivor Novello
- John Cale
- John Charles
- Katherine Jenkins
- Kingdom of Powys
- Leanne Wood
- Llywelyn ab Iorwerth
- Llŷn Peninsula
- Monmouth
- Names of the British Isles
- National Library of Wales
- Prehistoric Wales
- River Dee, Wales
- River Severn
- Roald Dahl
- Rowan Williams
- Ryan Giggs
- Sarah Siddons
- Second Severn Crossing
- Severn Bridge
- Shirley Bassey
- Six Nations Championship
- Snowdonia
- Stanley Baker
- Stephen Crabb
- Tintern Abbey
- Tom Jones (singer)
- United Kingdom invocation of Article 50 of the Treaty on European Union
- University of Wales
- Welsh Dragon
- Welsh Labour
- Welsh independence
- Welsh toponymy
- William Williams Pantycelyn
- 2007 National Assembly for Wales election
- Aberffraw
- Alex Gordon (architect)
- Ancient Celtic warfare
- Anwyl of Tywyn family
- Arriva Trains Wales
- Arthur Machen
- Bangor University
- Bardsey Island
- Barry Waterfront
- Bartholomew Roberts
- Becky Morgan
- Ben Thatcher
- Bernard de Neufmarché
- Betsi Cadwaladr
- Blaenau Ffestiniog
- Bonnie Tyler
- Bridgend
- Britannia Bridge
- Buckley, Flintshire
- Cadoc
- Caldey Island
- Cardiff Central railway station
- Carmarthen
- Carnedd Llewelyn
- Carreglwyd
- Castell Dinas Brân
- Celticisation
- Chepstow
- Chwilog
- Coal Mines Act 1911
- Coat of arms of the Prince of Wales
- Cyfraith Hywel
- D. Gwenallt Jones
- Dafydd ap Gruffydd
- Danny Gabbidon
- Desmond Llewelyn
- Despenser War
- Dicky Owen
- Dinas Powys
- Domesday Book
- Druid
- Ednyfed Fychan
- Elan Valley Reservoirs
- Ellis ap Griffith
- Ergyng
- Ernest Jones
- Extreme points of the United Kingdom
- Fagan (saint)
- Focus Wales
- Freddie Welsh
- Gabby Logan
- Gary Speed
- George Herbert
- Gethin Jones
- Gresford disaster
- Guinevere
- Gwen John
- Harlech
- Hen Ogledd
- Henry Morris-Jones
- Henry Vaughan
- History of Gwynedd during the High Middle Ages
- Hugh Evan-Thomas
- Ian Rush
- Ian Woosnam
- Ioan Gruffudd
- James Fox (singer)
- Joe Ledley
- Karl Jenkins
- Knighton, Powys
- Leigh Richmond Roose
- Leila Megàne
- Leslie Norris
- Llandow air disaster
- Llangollen Canal
- Lordship of Denbigh
- Lôn Goed
- M4 motorway
- MOD St Athan
- Martyn Joseph
- Mary Jones and her Bible
- Max Boyce
- Molly Scott Cato
- Monmouthshire and Brecon Canal
- Music of Wales
- National Shipyard
- Neath and Brecon Railway
- Owain Lawgoch
- Owen Glendower (novel)
- Penal laws against the Welsh
- Penarth
- Percy Morris
- Proposed Welsh justice system
- RAF Angle
- RAF Brawdy
- RAF Llandwrog
- Rail transport in Wales
- Rhondda
- Rhondda and Swansea Bay Railway
- Rhydymwyn
- Richard Gwyn
- River Lugg
- River Teme
- Rob Brydon
- Royal Glamorgan Artillery Militia
- Severn Tunnel
- Snowdon Mountain Railway
- South Wales Brigade
- South Wales Gas Pipeline
- St Athan
- St Cadwaladr's Church, Llangadwaladr
- St Mary's Church, Mold
- St Padarn's Church, Llanbadarn Fawr
- Stephen Kinnock
- Tony Pulis
- Vale of Rheidol Railway
- Wales at the Rugby World Cup
- Welsh rebellions against English rule
- William Bulkeley Hughes
- William Mainwaring
- Windsor Davies
- Wrexham A.F.C.
- 12th century in Wales
- 16th century in Wales
- 1780s in Wales
- 1790s in Wales
- 17th century in Wales
- 1973 Gwent County Council election
- 1986 in Wales
- 1987 in Wales
- 1988 in Wales
- 1989 in Wales
- 1991 in Wales
- 1992 in Wales
- 1993 in Wales
- 1994 in Wales
- 1995 in Wales
- 1996 in Wales
- 1997 in Wales
- 1998 in Wales
- 1999 in Wales
- 2000 in Wales
- 2001 in Wales
- 2002 in Wales
- 2003 in Wales
- 2004 in Wales
- 2005 in Wales
- 2007 in Wales
- Abersoch Lifeboat Station
- Aberystwyth railway station
- Adam of Usk
- Aelhaiarn
- Alexandra quarry
- Allt-yr-yn
- Alway
- Ambrosius Aurelianus
- Angevin Empire
- Archaeologia Cambrensis
- Areas of Outstanding Natural Beauty in Wales
- Arfor
- Battle of Buttington
- Battle of Edgcote
- Beaumaris Lifeboat Station
- Brân the Blessed
- Bull Bay Lifeboat Station
- Caergwrle Castle
- Caernarfon railway station
- Caerphilly Heart Disease Study
- Caldicot Castle (1794 ship)
- Cambrian Quarterly Magazine and Celtic Repertory
- Candleston Castle
- Cantiorix Inscription
- Carl G. Jones
- Catherine Lynch
- Celtic nations
- Celtic rainforests in Wales
- Cemaes Lifeboat Station
- Cemlyn Lifeboat Station
- Centre for Advanced Welsh and Celtic Studies
- Charles Bertram
- Charlotte Church
- Chepstow Railway Bridge
- Clifford Cory
- Cnapan Hotel
- Connop Thirlwall
- Coptic Orthodox Church in Wales
- Coronet of Charles, Prince of Wales
- Corris Railway
- Cors Caron
- Criccieth Lifeboat Station
- Crumpet
- Cuisine of Monmouthshire
- Curran Steels
- Cwmbran
- Cymru
- Deke Leonard
- Dennis David
- Deruvian
- Dick Rees
- Dora Herbert Jones
- Economic history of Wales
- Eglwys y Bedd
- Eirwen Gwynn
- Elis James
- Elizabeth Morgan (actress)
- Ellis-Nanney baronets
- Emiliano Sala
- Fashion of Catherine, Princess of Wales
- Feeder (band)
- FitzRoy Somerset, 4th Baron Raglan
- Fort Belan
- Frank Brangwyn
- Fulk FitzWarin
- Funeral for a Friend
- Georgiana Hare-Naylor
- Gerard Manley Hopkins
- Gethin Jones (soccer, born 1995)
- Greville Janner
- Gwbert
- Gwladys ferch Dafydd Gam
- HMS Arethusa (1817)
- HMS Melampus (1820)
- HMS Myrmidon (1813)
- HMS Nereus (1821)
- HMS Valorous (1816)
- Harold Jones (murderer)
- Henry Bartle Frere
- History of education in Wales
- Horton Davies
- Hugh Ellis-Nanney
- Hugh Llewellyn Glyn Hughes
- Huw Dixon
- Idris Jones (chemist)
- James Augustus St. John
- James Relly
- Jem (singer)
- Jessie Penn-Lewis
- Joanna Penberthy
- Joe Calzaghe
- John Barnard Jenkins
- John Dee
- John Prescott
- John Ystumllyn
- Joseph Edwards (sculptor)
- Kathleen and May
- Klondyke mill
- Leighton Hall, Powys
- Lembit Öpik
- Lewis Llewelyn Dillwyn
- Lily Argent
- List of non-marine molluscs of Great Britain
- Lisvane
- Llanddwyn Lifeboat Station
- Llangelynnin, Conwy
- Llangolman
- Llyn Cerrig Bach
- Llywernog Mine
- Llŷr Williams
- Madoc
- Margaret Haig Thomas, 2nd Viscountess Rhondda
- Marriage in England and Wales
- Mary Gillham
- Meic Stephens
- Mel Charles
- Meurig ab Arthfael
- Michael Heseltine
- Michael Owen
- Midland Union of Natural History Societies
- Murder of Lynette White
- Myvanwy Rhys
- Nannau, Wales
- Nathan Cleverly
- Nerquis Hall
- Newborough, Anglesey
- Nicholas Carew (died 1311)
- Origins of Falkland Islanders
- Pains and Penalties Bill 1820
- Parkmill
- Parrot Corporation
- Patrick Gibbs
- Pencoedtre
- Pendoylan
- Philip Jones Griffiths
- Poppit Sands
- Porth Ruffydd Lifeboat Station
- Prince of Wales Theatre, Cardiff
- Princess Charlotte of Wales (ship)
- Pushing the Senses
- Raglan, Monmouthshire
- Regions of Wales
- Renewable energy in Wales
- Rhosydd quarry
- Richard Williams Morgan
- Richard of Cirencester
- Robert Fitzhamon
- Robert Vaughan (antiquary)
- Rowland Laugharne
- Ruth Madoc
- Rǫgnvaldr Guðrøðarson
- SS Beemsterdijk
- SS Ben Seyr
- Saint Ninnoc
- Selina Rushbrook
- Sir Robert Vaughan, 2nd Baronet
- St Chad's Church, Holt
- St Deiniol's Church, Hawarden
- St Garmon's Church, Llanfechain
- St Hilary, Vale of Glamorgan
- St Michael and All Angels Church, Kerry
- Staylittle
- Stereophonics
- Sylvia Sleigh
- Talhenbont Hall
- Tanat Valley Light Railway
- Tenby Lifeboat Station
- The Black Cauldron (film)
- The Crown
- The Description of Britain
- Third Menai Crossing
- Thomas Bowles (priest)
- Thorne Island
- Tiggy Legge-Bourke
- Tom Pryce
- Tom Rees (aviator)
- Torchwood
- Trawsfynydd railway station
- United Rugby Championship
- Urban (bishop of Llandaff)
- Vortigern
- Wales Comic Con
- Waun Mawn
- Welsh Church Commissioners
- Welsh Tax Acts etc. (Power to Modify) Act 2022
- Why Didn't They Ask Evans?
- William, Prince of Wales, in film and television
- Wrexham Police Station (1973–2020)
- Wye Valley Railway
- Wynn baronets
- Ymadawiad Arthur
- 2021 Welsh Labour–Plaid Cymru agreement
- All Saints' Church, Llangar
- Beli Mawr
- Coal tips in Wales
- David Watkin Jones
- Early modern Britain
- Edmund Prys
- Elspeth Hughes-Davies
- Fields in Trust
- Grove Park School, Wrexham
- Hannah Grae
- Island Green
- Jamie Lewis
- John Meurig Thomas
- Klervi
- Llanaelhaearn Lifeboat Station
- Llanddulas Lifeboat Station
- Llyn y Tri Greyenyn
- National Contemporary Art Gallery for Wales
- Pa gur
- Pant-yr-Ochain
- Penmon Lifeboat Station
- Rhoscolyn Lifeboat Station
- Rhosneigr Lifeboat Station
- Salisbury Park Conservation Area
- Samuel Maurice Jones
- St Cyngar's Church, Hope
- Sue Essex
- The Colours (play)
- The Magpie's Advice
- The Snow (poem)
- To the Yew Tree Above Dafydd ap Gwilym's Grave
- Trinity Presbyterian Church, Wrexham
- Wales national rugby league team
- Waterworld, Wrexham
- Carwyn Jones
- David Lloyd George
- Flag of Wales
- Gareth Edwards
- Llywelyn ap Gruffudd
- Mabinogion
- Mark Drakeford
- Mining in Wales
- Monmouthshire (historic)
- North Wales
- Politics of Wales
- Powys
- Rhondda Cynon Taf
- Rugby union in Wales
- Saint David
- Science and technology in Wales
- South Wales
- Sport in Wales
- Swansea
- Welsh Government
- Welsh art
- Welsh language
- Wrexham
- Wrexham County Borough
- 2014 Wales summit
- Aberystwyth
- Alun Michael
- Anarawd ap Rhodri
- Angharad Tomos
- Ar Hyd y Nos
- Architecture of Wales
- BBC Cymru Wales
- BBC Radio Wales
- Black Book of Carmarthen
- Blaenavon Industrial Landscape
- British people
- Cambrian Line
- Cardiff Airport
- Cardiff City Stadium
- Cardiff RFC
- Cardiff Rugby
- Cardiff city centre
- Catholic Church in England and Wales
- Celtic Britons
- Chepstow Castle
- Christianity in Wales
- Church in Wales
- Colin Jackson
- Ebbw Vale Steelworks
- Economy of Wales
- Eisteddfod
- England–Wales border
- English criminal law
- Gerald of Wales
- Great Orme
- Griff Rhys Jones
- Guto'r Glyn
- Gwynfor Evans
- Henry Morton Stanley
- Henry VII of England
- History of the Welsh language
- Holy Island, Anglesey
- ITV Wales & West
- Iolo Morganwg
- Joseph Kappen
- Judicial review in English law
- Judiciary of England and Wales
- Laura Ashley
- Laws in Wales Acts 1535 and 1542
- Leek
- Legislatures of the United Kingdom
- Leo Abse
- Llanfairpwllgwyngyll
- Lostprophets
- Madog ap Llywelyn
- Manic Street Preachers
- Marcher lord
- Menai Strait
- Middle Welsh
- Mold, Flintshire
- NHS Wales
- Neath RFC
- Neil Kinnock
- Noah's Ark Children's Hospital for Wales
- Offa's Dyke
- Owain Glyndŵr Day
- Plas y Brenin
- Pontcysyllte Aqueduct
- Port Talbot
- Pound sterling
- Prehistoric Britain
- Princess of Wales
- Principality of Wales
- Protected areas of Wales
- R. S. Thomas
- Radio in Wales
- Ray Gravell
- Religion in Wales
- Rhodri Mawr
- Richard Burton
- Richard Price
- River Teifi
- Ron Davies (Welsh politician)
- Ruth Jones
- S4C
- Saint David's Day
- Sam Warburton
- Saunders Lewis
- Simon Weston
- South Wales Main Line
- South Wales Valleys
- St. Jude storm
- St Davids Cathedral
- Super Furry Animals
- Swansea University
- Taliesin
- Terry Matthews
- Timeline of Welsh history
- Traditional Welsh costume
- Transport in Wales
- Trunk roads in Wales
- University of Wales Trinity Saint David
- Wales in the Roman era
- Wales national football team
- Warren Gatland
- Wat's Dyke
- Welsh-language literature
- Welsh Conservatives
- Welsh English
- Welsh Guards
- Welsh Language Act 1967
- Welsh Language Act 1993
- Welsh Marches
- Welsh Methodist revival
- Welsh Not
- Welsh Rugby Union
- Welsh literature in English
- Welsh nationalism
- Ysgol Uwchradd Caergybi
- 1607 Bristol Channel floods
- 1904–1905 Welsh revival
- 1958 British Empire and Commonwealth Games
- 2010 Welsh Open (snooker)
- 2018 Wales Rally GB
- A-level
- A40 road
- A470 road
- Aaron Ramsey
- Aberaman
- Aberdare
- Aberdare Canal
- Aberfan Disaster Tribunal
- Abergavenny
- Abergele rail disaster
- Aberystwyth Castle
- Aberystwyth University
- Adam Price
- Albert Evans-Jones
- Alex Jones (Welsh presenter)
- Alexandra (Newport and South Wales) Docks and Railway
- All Saints' Church, Gresford
- Alun Wyn Jones
- Amy Dillwyn
- Ann Clwyd
- Ann Griffiths
- Annabel Giles
- Anne Beale
- Arenig Fawr
- Atlantic College
- Augusta Hall, Baroness Llanover
- Augustus John
- Autism Cymru
- Awen
- BBC Radio Cymru
- Baldwin III, Count of Guînes
- Bando (sport)
- Bard
- Barry, Vale of Glamorgan
- Barry Island
- Barry Island railway station
- Battle of Pwll Melyn
- Bernice Rubens
- Bessie Jones (Welsh singer)
- Bethan Gwanas
- Betty Campbell
- Biodiversity of Wales
- Black Mountain (range)
- Blackwood, Caerphilly
- Blorenge
- Bodelwyddan Castle
- Bodnant Garden
- Brains Brewery
- Brecknockshire
- Brecon Beacons National Park
- Bristol Channel
- Bristol and South Wales Union Railway
- British & Irish Lions
- Brittonic languages
- Broadcasting House, Cardiff
- Bryngarw Country Park
- Buildings associated with Owain Glyndŵr
- Business ownership within England and Wales
- Cadwgan ap Bleddyn
- Caldey Abbey
- Cambria
- Cambrian Railways
- Caratacus
- Cardiff Athletic Club
- Cardiff Bay
- Cardiff Bus
- Cardiff Central (Senedd constituency)
- Cardiff Central Library
- Cardiff Central bus station
- Cardiff Council
- Cardiff Docks
- Cardiff English
- Cardiff Metropolitan University
- Cardiff North (Senedd constituency)
- Cardiff Philharmonic Orchestra
- Cardiff South and Penarth (Senedd constituency)
- Cardiff University
- Cardiff University School of Medicine
- Cardiff West (Senedd constituency)
- Carmarthenshire County Council
- Carmarthen–Aberystwyth line
- Carol Vorderman
- Carreg Cennen Castle
- Carwyn James
- Caswell Bay
- Cathays Park
- Cawl
- Ceredigion (UK Parliament constituency)
- Ceredigion Coast Path
- Ceri Richards
- Cerys Matthews
- Chairing of the Bard
- Chester and Holyhead Railway
- Chris Coleman (footballer)
- Chris Mepham
- Christopher Williams (Welsh artist)
- City and County of Swansea Council
- Civil Procedure Rules
- Civil parish
- Connah's Quay Nomads F.C.
- Conwy Valley line
- Corona (soft drink)
- Corporate manslaughter in English law
- County Hall, Cardiff
- Crempog
- Crumlin Arm (Monmouthshire canal)
- Crwth
- Cuisine of Pembrokeshire
- Culture and recreation in Cardiff
- Cyfarthfa Castle
- Cyfarthfa Ironworks
- Cymru Premier
- Dafydd Wigley
- Dai Greene
- Dai Rees
- Daniel Curtis (composer)
- David Rees (Y Cynhyrfwr)
- David T. C. Davies
- Dee Regulation Scheme
- Deep Navigation Colliery
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- Descriptio Cambriae
- Dimlands
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- Donald Davies
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- Dragons RFC
- Druid's Head Inn
- Dyffryn Gardens
- Ebbw Vale
- Economy of Cardiff
- Edwina Hart
- Eleazar Roberts
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- Ernest Vaughan, 7th Earl of Lisburne
- Eurwyn Wiliam
- Eve Myles
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- Flint, Flintshire
- Flint Castle
- Four Branches of the Mabinogi
- Frustration in English law
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- Gareth Jones (journalist)
- Gareth Thomas (rugby, born 1974)
- Garnant
- Geoff Charles
- Geoffrey of Monmouth
- George Thomas, 1st Viscount Tonypandy
- Geraint Davies (Labour politician)
- Geraint Thomas
- Gerald Davies
- Gethin ap Gruffydd
- Glamorgan County Council
- Glamorganshire Canal
- Glanamman
- Glenys Kinnock
- Gower Peninsula
- Grave of David Lloyd George
- Great Western Railway in West Wales
- Guto Puw
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- Gwydir Forest
- Gwyn A. Williams
- Gwynedd Council
- Gwyneth Lewis
- Harri Webb
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- Henry Milbourne
- Henry V of England
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- Hirwaun
- History Grounded
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- House of Gwynedd
- Howard Marks
- Hung parliament
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- Hywel ab Owain Gwynedd
- Ian Watkins (Lostprophets singer)
- Ifor ap Glyn
- Institute of Welsh Affairs
- International relations of Wales
- J. P. R. Williams
- James Hanley (novelist)
- James Szlumper
- Jason Koumas
- Jill Evans
- Jodie Marie
- John Charlton, 1st Baron Charlton
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- John Hartson
- John Humphrys
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- John Thomas, Baron Thomas of Cwmgiedd
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- Jonathan Davies (rugby, born 1962)
- June Osborne
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- Ken Jones (rugby union, born 1921)
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- Lee Waters
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- Llewelyn Kenrick
- Lloegyr
- Local Government Act 1929
- Logo of the Welsh Rugby Union
- Lucy Thomas
- Machynlleth
- Maelgwn Gwynedd
- Magistrate (England and Wales)
- Magnus Maximus
- Malltraeth Marsh
- Manchester and Milford Railway
- Margam Stones Museum
- Margaret Price
- Mark Hughes
- Marquess of Abergavenny
- Martyn Lloyd-Jones
- Mary Dillwyn
- Mary Hopkin
- Mary Thomas O'Neal
- Matthew Rhys
- Media in Cardiff
- Medical education in Wales
- Medieval Welsh literature
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- Merthyr Tydfil (UK Parliament constituency)
- Merthyr Tydfil County Borough
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- Millicent Mackenzie
- Modern history of Wales
- Moel Siabod
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- Monmouth Priory
- Monmouth cap
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- Monmouthshire Railway and Canal Company
- Monmouthshire and South Wales Coal Owners' Association
- Montgomery Canal
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- Newport railway station
- Nigel Owens
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- Order of precedence in England and Wales
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- Owen Smith
- Panteg Steel Works
- Parc le Breos
- Paul Flynn (politician)
- Paul Murphy, Baron Murphy of Torfaen
- Paul Radmilovic
- Paul Whitehouse
- Pembroke, Pembrokeshire
- Pembroke (UK Parliament constituency)
- Pembroke Dock
- Pembrokeshire (UK Parliament constituency)
- Penparcau
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- Percy Thomas Partnership
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- Picton Castle
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- Politics in Cardiff
- Pontypool and Blaenavon Railway
- Pontypridd, Caerphilly and Newport Railway
- Porius: A Romance of the Dark Ages
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- Proposed Saint David's Day bank holiday
- Proposed further Welsh devolution
- Pwll Du Tunnel
- RAF Pengam Moors
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- Rail transport in Cardiff
- Ray Milland
- Raymond Williams
- Rebecca Riots
- Reservoirs of Wales
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- Rhydian Roberts
- Rhymney Railway
- Richard Marquand
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- Rob Edwards (footballer, born 1982)
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- Rolls Series
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- Saint Non
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- Skomer
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- St John's Church, Abergavenny
- St Lythans burial chamber
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- St Winefride's Well
- Swansea (UK Parliament constituency)
- Swansea Canal
- Swansea City A.F.C.
- Swansea City Centre
- Swansea District (UK Parliament constituency)
- Swansea docks
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- Taff Trail
- Taff Vale Railway
- Terry Jones
- Terry Yorath
- The National Archives (United Kingdom)
- The Spooners of Porthmadog
- Thomas Alwyn Lloyd
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- Thomas Prothero
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- Tiger Bay
- Timeline of Cardiff history
- Tom James (rower)
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- Trades Union Congress
- Transport in Cardiff
- Treaty of Montgomery
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- Vaynol
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- Vortiporius
- W. F. Grimes
- Wales at the UEFA European Championship
- Wales in the World Wars
- Walter Conway
- Wayne Jones (footballer)
- Welsh Church Act 1914
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- Welsh Highland Railway restoration
- Welsh Language (Wales) Measure 2011
- Welsh Open (snooker)
- Welsh Tower houses
- Welsh Triads
- Welsh pig
- Welshpool
- West Carmarthenshire (UK Parliament constituency)
- West Wales lines
- William Abraham (trade unionist)
- William Lewis, 1st Baron Merthyr
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- Woodham Brothers
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- Xplore!
- Y Wladfa
- 1176 Cardigan eisteddfod
- 118 118 (UK)
- 12–16 Church Street, Monmouth
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- 1982 visit by Pope John Paul II to the United Kingdom
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- 2019–20 Celtic Cup
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- A. G. Edwards (bishop)
- A4232 road
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- Aberdyfi
- Aberfan
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- Aberthaw Lime Works
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- Abi Morgan
- Abolish the Welsh Assembly Party
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- Adele Nicoll
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- Admiral Group
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- Adrian Masters
- Adrian Street
- Adventure Travel (bus company)
- Afon Clun
- Age of consent reform in the United Kingdom
- Agincourt Square, Monmouth
- Alan Cox (computer programmer)
- Alban Square, Aberaeron
- Albert J. Pitman
- Alexander Rolls
- Alfred Janes
- Alice Abadam
- Alice Margaret Cooke
- Alis Mallt Williams
- Alisha Joyce-Butchers
- Alison Bielski
- Allison Pearson
- Alun Oldfield-Davies
- Alwyn D. Rees
- Alys (TV series)
- Ambition North Wales
- Ammanford
- Ammanford Cricket Club
- An American Werewolf in London
- Andrew Pagett
- André Hue
- Aneurin Owen (antiquarian)
- Anna McMorrin
- Anna Williams (poet)
- Anne Penny
- Anne Smith (academic)
- Anneka Rice
- Anthracite Miners' Association
- Apostolic Church (1916 denomination)
- Architecture of Cardiff
- Archæologia Britannica
- Armed forces in Wales
- Arthur Edwin Stevens
- Arthur Horner (trade unionist)
- Arthur Linton
- Ashley Williams (footballer)
- Aspect Television
- Audrey Williams (archaeologist)
- Augustine Baker
- BBC Cardiff Singer of the World competition
- Banc Tynddol sun-disc
- Bangor railway station (Wales)
- Barnett formula
- Baron Tredegar
- Barry railway station
- Basil Jones
- Battle of the Conwy
- Bedd-y-Cawr Hillfort
- Beddoe Rees
- Bedwellty
- Beechwood Park, Newport
- Beguildy
- Ben Gunn (campaigner)
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- Bernard Fox (actor)
- Bersham Colliery
- Bethan Sayed
- Beti Rhys
- Betsy (singer)
- Big House, Landshipping
- Bill Roberts (rugby union)
- Bill Withers (snooker player)
- Billy Hughes (footballer, born 1918)
- Black Mountains, United Kingdom
- Blackwood Interchange
- Blackwood Miners Welfare Institute
- Blaen y Cwm quarry
- Blaenau Festiniog Junction railway station
- Blaenau Ffestiniog Central railway station
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- Blaenau Ffestiniog passenger stations
- Blaenffos
- BlossomWatch
- Bodelwyddan
- Bodysgallen Hall
- Bonc yr Hafod
- Book of Common Prayer (1984)
- Borough Welsh Congregational Chapel
- Bradley Pryce
- Brenda Chamberlain (artist)
- Brennan Johnson
- Bridgend Central
- Bristol Channel pilot cutter
- British Home Championship
- British baseball
- British literature in languages other than English
- Bron-Yr-Aur
- Broughton Shopping Park
- Brymbo
- Brymbo Hall
- Brymbo railway branch lines
- Bryn Eglwys quarry
- Brynglas Tunnels
- Brynglas railway station
- Brynkinalt
- Brynmawr rubber factory
- Brynteg School
- Bus transport in Cardiff
- Butchers' Market, Wrexham
- Bute Park
- Bute Street, Cardiff
- Butetown
- COVID-19 pandemic in Wales
- Cabinet Secretary for Transport (Wales)
- Cadair Idris
- Cadfan ap Iago
- Caer
- Caergwrle
- Caernarfonshire
- Calfaria Chapel, Aberdare
- Cambrian Mills
- Cambrian Pottery
- Cambrian quarry
- Camelot
- Canton, Cardiff
- Cantref Coch
- Capel Colman
- Capel Curig
- Capel Garmon Firedog
- Car gwyllt
- Cardiff, Wales: 6/23/04
- Cardiff Capital Region
- Cardiff Central (UK Parliament constituency)
- Cardiff Corporation Waterworks
- Cardiff Demons
- Cardiff Devils
- Cardiff Dragons (netball)
- Cardiff Ely bread riots
- Cardiff Greyhounds
- Cardiff Harbour Authority
- Cardiff Rivers Group
- Cardiff South and Penarth (UK Parliament constituency)
- Cardiff power stations
- Carew Tidal Mill
- Carmarthen Bridge
- Carmarthen Town North and South
- Carnarvon Castle railway station
- Caroline Jones (politician)
- Caroline Skeel
- Carreghofa Castle
- Castell Arnallt
- Castell Caer Seion
- Castle Green House
- Cathays
- Catherine Davies (governess)
- Cathryn Mitchell
- Cecily Mackworth
- Celtic League
- Celtic Manor Resort
- Celtic Sea
- Celtic mass
- Cemaes Head
- Cenarth Bridge
- Central Arcade, Wrexham
- Chambers family
- Charles William Jones
- Chepstow School
- Cherry Vann
- Chippenham Mead
- Christ Church, Bryn-y-Maen
- Christ Church, Rossett
- Christ Church, Welshpool
- Christianity and association football
- Christina Rees
- Church of Our Lady of Mount Carmel, Lampeter
- Church of St Beuno and St Mary
- Church of St Eurgain and St Peter
- Church of St John the Baptist, Llanblethian
- Church of St Michael and All Angels, Llanvihangel-Ystern-Llewern
- Church of St Thomas the Martyr, Monmouth
- Church of the Holy Cross, Cowbridge
- City, Powys
- Clark's Pies
- Clash at the Castle (2022)
- Clear red water
- Clemenstone
- Clement Price Thomas
- Cliff Jones (Welsh footballer)
- Climate of Wales
- Clive Hicks-Jenkins
- Clocaenog Forest Man
- Clwydian Range and Dee Valley
- Clytha Park
- Coed Darcy
- Coedarhydyglyn
- Coedpoeth
- Cofiwch Dryweryn
- Colcot
- Cole Dasilva
- Comic Con Wales
- Common land
- Comprehensive school
- Compulsory purchase in England and Wales
- Conwy Railway Bridge
- Cornish heraldry
- Cory McKenna
- Cotswold-Severn Group
- County Buildings, Wrexham
- Court Farm, Pembrey
- Court of Exchequer Chamber
- Cowbridge Girls School
- Cowlyd Tramway
- Craig-y-Nos Castle
- Craig Rhiwarth
- Crannog
- Crawshay Bailey Jr
- Crickhowell Bridge
- Croesor quarry
- Cross of Wales
- Crown and Thistle Inn, Monmouth
- Crumlin Viaduct
- Crusaders Rugby League
- Crymych
- Cuisine of Carmarthenshire
- Cuisine of Gower
- Cuisine of Swansea
- Cwm Prysor Halt railway station
- Cwm Rhondda
- Cwmavon, Torfaen
- Cwmgelli Cemetery
- Cwmorthin quarry
- Cycling in Cardiff
- Cyclone Anne (2014)
- Cyclone Dirk
- Cyclone Tini
- Cyclone Xaver
- Cyfarthfa Band
- Cyfoesi Myrddin a Gwenddydd ei Chwaer
- Cymmer, Rhondda Cynon Taf
- Cynan Jones
- D. J. Cathcart King
- Dafydd Elis-Thomas
- Dai Parker
- Dan Biggar
- Dapol
- David Banner (game designer)
- David Crystal
- David Edwards (footballer, born 1986)
- David FitzGerald
- David Garner (artist)
- David James Davies
- David R. Jones (architect)
- David Thomas (educationalist)
- Davies brothers of Bersham
- Dawnus
- De Excidio et Conquestu Britanniae
- Deeside Tramway
- Deeside and Moelfferna quarries
- Delyth Morgan, Baroness Morgan of Drefelin
- Denis O'Connor (police officer)
- Derrick Morris
- Dic Penderyn
- Dick Atkin, Baron Atkin
- Dickie Morris
- Dilys Price
- Dinas Rock
- Dinas railway station (Festiniog Railway)
- Dinefwr Park National Nature Reserve
- Dinogad's Smock
- Dinorwig Power Station
- Diphwys railway station
- Doctor Who
- Doctor Who fandom
- Dolaucothi Estate
- Dolaucothi Gold Mines
- Dolgoch quarry, Gwynedd
- Dolgoch railway station
- Dolmelynllyn Estate
- Dolobran, Montgomeryshire
- Dorothy Edwards (Welsh novelist)
- Dorothy Miles
- Dragon's Back Race
- Drew Parker
- Dudley Lloyd-Evans
- Duffws railway station (Festiniog Railway)
- East Camp
- Ebbw Vale RLFC
- Edith Mansell-Moullin
- Edward Davies (minister)
- Edward Jones (Welsh architect)
- Edward Turberville
- Edward Welchman
- Edward Williams (minister)
- Efnysien
- Eighty-five martyrs of England and Wales
- Eileen Rees
- Eiluned Lewis
- Eirias Stadium
- Elaine Morgan
- Elections in Wales
- Elias Owen (footballer)
- Elias Owen (priest)
- Eliza Ann Fewings
- Elizabeth (1809 ship)
- Eluned Morgan (author)
- Ely, Cardiff
- Ely Subway
- Emily Burnett
- Emily Jane Pfeiffer
- Emily Rose Bleby
- Emmeline Lewis Lloyd
- Emrys Roberts (Liberal politician)
- England and Wales
- England and Wales Precipitation
- English Football League
- English longbow
- Erbistock
- Eudaf Hen
- European route E30
- Eva Clarke
- Eva Marshal
- Evan Evans (Ieuan Glan Geirionydd)
- Evan Jones (Ieuan Gwynedd)
- Evan Roberts (minister)
- Evan Stephens
- Evelyn Bowen
- Every Valley
- Ezzelina Jones
- Faenol Fawr, Bodelwyddan
- Fantasia on Welsh Nursery Tunes
- Fashion of Diana, Princess of Wales
- Felindre, Powys
- Festiniog railway station
- Ffestiniog Power Station
- Ffion Davies
- Fflecsi
- Fflorens Roch
- Ffos Las racecourse
- Ffotogallery
- Fireman Sam
- Fisher Morgan
- Flat Holm Lighthouse
- Fonmon Castle
- Football Museum for Wales
- Fourth Shadow Cabinet of Andrew RT Davies
- Frances Hoggan
- Frances Môn Jones
- Frances Williams (convict)
- Francis Kitto
- Francis Ormsby-Gore, 6th Baron Harlech
- Freshwater West
- Fron-Boeth and Pant Mawr quarries
- Frongoch quarry, Aberdyfi
- Funeral of Diana, Princess of Wales
- GWR Rheidol Tanks
- Gabalfa
- Gareth Hughes
- Gareth Morse
- Garth (Guilsfield)
- Garthmyl Hall, Berriew
- Gary Buckland
- Gellionnen Chapel
- General Market, Wrexham
- Geoffrey Crawshay
- Geology of Anglesey
- Geology of Brecon Beacons National Park
- Geology of Carmarthenshire
- Geology of Ceredigion
- Geology of Snowdonia National Park
- Geology of the Gower Peninsula
- George Powell (collector)
- Gilbert Marshal, 4th Earl of Pembroke
- Gillian Clarke
- Girls' Day School Trust
- Glais
- Glamorgan County Cricket Club in 2022
- Glamorgan Fortress Royal Engineers
- Glanmôr School
- Glanville Williams
- Glas Hirfryn
- Glendower Street, Monmouth
- Glynneath RFC
- Glyntawe
- Godfrey Darbishire
- Gorhoffedd Hywel ab Owain Gwynedd
- Gorsedd Cymru
- Goscombe John
- Grace Coddington
- Graham Sutherland
- Grahame Davies
- Graig Ddu quarry
- Grangetown, Cardiff
- Grassholm
- Great British Railway Journeys
- Great Manson Farm, Monmouth
- Great Orme Tramway
- GreenWood
- Green Left (England and Wales)
- Gresford Colliery
- Gresford Methodist Church
- Grey Box Reserve
- Grongar Hill
- Gruff Rhys
- Gruffudd ap Maredudd ap Dafydd
- Gruffudd ap Nicolas
- Grwyne Fawr Reservoir
- Guto Harri
- Gwenddydd
- Gweneth Lilly
- Gwenllian Pyrs
- Gwenno Saunders
- Gwent Broadcasting
- Gwersyllt
- Gwespyr
- Gweunydd Blaencleddau
- Gwydion
- Gwydir Castle
- Gwyn Jones (author)
- Gwyneth Jones (soprano)
- Gwynllyw
- HMS Ariadne (1816)
- HMS Centurion (1844)
- HMS Colossus (1848)
- HMS Conway (school ship)
- HMS Harrier (shore establishment)
- HMS Iris (1877)
- HMS Lion (1847)
- HMS Magicienne (1849)
- HMS Medina (1840)
- HMS Medusa (1838)
- HMS Mercury (1878)
- HMS Merlin (1838)
- HMS Superb (1842)
- HMS Thetis (1817)
- HMS Valorous (1851)
- HMS Vulture (1843)
- Habershon and Fawckner
- Hadnock
- Hafodunos
- Hafren Dyfrdwy
- Hal Robson-Kanu
- Haley Gomez
- Harriet Windsor-Clive, 13th Baroness Windsor
- Harry Wilson (footballer, born 1997)
- Haverfordwest Castle
- Hayley Ladd
- Heart of Wales line
- Helen Griffin
- Hendreddu quarry
- Hengoed (Carmarthenshire electoral ward)
- Hengoed Viaduct
- Henry Bracy
- Henry Lloyd (soldier)
- Henry Majendie
- Henry Tufnell (Welsh politician)
- Herbert Rowse Armstrong
- Hester Thrale
- High Street, Newport, Wales
- His Shadow
- History of Doctor Who
- History of Wrexham
- History of medieval Cumbria
- Hobbit (unit)
- Holyhead railway station
- Home (restaurant)
- Horse racing in Wales
- House for the Future, Cardiff
- Howard Thomas (scientist)
- Howell Moore-Gwyn
- Hugh Cudlipp
- Human Transplantation (Wales) Act 2013
- Hyssington
- Hywel Francis
- Hywel Lewis
- Ian Grist
- Ian Lucas
- Ian Parry
- Idris Williams
- Ieuan Deulwyn
- In My Skin (TV series)
- Independent Commission on Funding and Finance for Wales
- Independent Safeguarding Authority
- Indian Face
- Individual voluntary arrangement
- Informing Healthcare
- Inmos
- Insole Court
- Institution of Engineering and Technology
- Intoxication in English law
- Investiture of Charles, Prince of Wales
- Investiture of the prince of Wales
- Iris-class cruiser
- Ivy Alvarez
- Iwan Rheon
- J. Rodney Quayle
- Jack Crabtree (artist)
- Jack Jenkins (rugby union)
- Jade Jones (taekwondo)
- Jade Knight
- James Motley
- James Rowberry
- James William Webb-Jones
- James William Whittaker
- Jamie Roberts
- Jan Morris
- Jane Arden (director)
- Jay Harris (boxer)
- Jayne Pierson
- Jenkin Lloyd Jones
- Jeremy Miles
- Jimmy Michael
- Jimmy Wilde
- Jo Mazelis
- Jo Walton
- Joan Oxland
- Joe Allen
- John Angelo Jackson
- John Coates Carter
- John Cooper (serial killer)
- John D. Reese
- John Davies (archbishop of Wales)
- John Davies (poet, born 1944)
- John Deffett Francis
- John Dillwyn Llewelyn
- John Gambold
- John Griffith (priest)
- John Griffiths (artist)
- John Gwynneth
- John Jones (controversialist)
- John Jones of Gellilyfdy
- John Parry (Bardd Alaw)
- John Propert
- John Roberts (martyr)
- John Roberts (rugby union)
- John Rolls
- John Rolls of The Hendre
- John Segrave, 2nd Baron Segrave
- John Silas Evans
- John Trevor (speaker)
- John Tudor Jones
- John Ward (archbishop of Cardiff)
- John Williams (priest, born 1792)
- John Wogan (Justiciar of Ireland)
- Johnston, Pembrokeshire
- Jon Ronson
- Jonathan Shepherd
- Joseph Jenkins (diarist)
- Josiah Lewis Morgan
- Josie d'Arby
- Judith M. Lumley
- Judith Maro
- Julie Gardner
- Julie Roberts (artist)
- June and Jennifer Gibbons
- Justiciar
- Juvencus Manuscript
- Kathryn Jenkins
- Kathy Jones
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- 1985 in Wales
- 1995 Welsh Open (snooker)
- 1999 National Assembly for Wales election
- 2000 Welsh Cup final
- 2001 Welsh Open (snooker)
- 2002 Welsh Open (snooker)
- 2003 National Assembly for Wales election
- 2003 Welsh Open (snooker)
- 2004 Welsh Open (snooker)
- 2005 Welsh Open (snooker)
- 2006 Welsh Open (snooker)
- 2006–07 Celtic League
- 2007–08 Celtic League
- 2008 Welsh Open (snooker)
- 2008 in Wales
- 2008–09 Celtic League
- 2009–10 Celtic League
- 2010 Ryder Cup
- 2010 in Wales
- 2010–11 Celtic League
- 2011 National Assembly for Wales election
- 2011 Welsh Open (snooker)
- 2011 in Wales
- 2012 Welsh Open (snooker)
- 2013 Swansea measles epidemic
- 2013 Welsh Open (snooker)
- 2014 Welsh Open (snooker)
- 2014 in Wales
- 2014–15 Cardiff City F.C. season
- 2014–15 Swansea City A.F.C. season
- 2014–15 Welsh Football League Division One
- 2014–15 Welsh League Cup
- 2015 Welsh Open (snooker)
- 2015 in Wales
- 2015–16 Cardiff City F.C. season
- 2016 Welsh Open (snooker)
- 2016–17 Cardiff City F.C. season
- 2018–19 Scarlets season
- 2021–22 Adran Premier
- 2022–23 Adran Premier
- 56 Group Wales
- 9th century in Wales
- A48(M) motorway
- A487 road
- A48 road
- A55 road
- A History of Monmouthshire from the Coming of the Normans into Wales down to the Present Time
- A History of Wales (book)
- Aberaeron
- Aberavon
- Aberavon RFC
- Aberbargoed
- Abercarn colliery disaster
- Abercraf English
- Aberdare Community School
- Aberdare Urban District
- Aberdyfi Castle
- Abergavenny Bridge
- Abergavenny Castle
- Abergavenny Museum
- Aberglaslyn Pass
- Abernant Colliery
- Abertillery
- Aberystwith and Welsh Coast Railway
- Aberystwyth Town Council
- Act of Senedd Cymru
- Adam Jones (rugby union, born 1980)
- Aeddan ap Blegywryd
- Afan Forest Park
- Afanc
- Afon Glaslyn
- Afon Lwyd
- Afon Mawddach
- Afon Ogwen
- Afon Rheidol
- Afon Tryweryn
- Alan Curtis (footballer)
- Alan Jones (cricketer, born 1938)
- Alan Llwyd
- Alan Thompson (broadcaster)
- Alexandra Roach
- Alfred Thomas, 1st Baron Pontypridd
- All Wales Convention
- All Wales Ethnic Minority Association
- Alun Lewis (poet)
- Alwyn Rice Jones
- Amman Valley Railway
- Amy Hawkins
- Amy Wadge
- And death shall have no dominion
- Andrew Green (librarian)
- Andrew Howard
- Aneurin Bevan University Health Board
- Angela Burns
- Angharad James-Turner
- Angharad Mair
- Angle Peninsula Coast
- Anglesey Coastal Path
- Angus McBean
- Anna Hursey
- Aran Fawddwy
- Archdruid
- Arenigs
- Arfon (cantref)
- Arfon transmitting station
- Arthur Owen Vaughan
- Arthur Pearson (British politician)
- Arthur Probert
- Artie Moore
- Arwel Hughes
- Arwyn Davies
- Asian Welsh people
- Athletics in Wales
- Athrwys ap Meurig
- Atlantic Wharf
- Aubrey Trotman-Dickenson
- Audit Wales
- B4329 road
- BBC 2W
- BBC Cymru Wales New Broadcasting House
- BBC Radio Cymru 2
- Baglan, Neath Port Talbot
- Baked Bean Museum of Excellence
- Bala, Gwynedd
- Bala-Bangor Theological Seminary
- Bala Lake
- Bala and Festiniog Railway
- Bangor and Carnarvon Railway
- Baptist Union of Wales
- Bara brith
- Barmouth
- Barn (Welsh magazine)
- Barry Castle
- Barry John (artist)
- Barry Railway Company
- Barry Tourist Railway
- Basketball Wales
- Bassaleg
- Battle of Bryn Glas
- Battle of Crogen
- Battle of Crug Mawr
- Battle of Mynydd Carn
- Beaumaris
- Beaumaris Pier
- Beddgelert
- Behnaz Akhgar
- Berwyn Mountain UFO incident
- Beth Robert
- Beth Winter
- Bethan James
- Bethesda, Gwynedd
- Betsi Cadwaladr University Health Board
- Betws-y-Coed (electoral ward)
- Bible translations into Welsh
- Bishop of Bangor
- Bishop of Llandaff
- Bishop of Monmouth
- Bishop of St Asaph
- Bishop of St Davids
- Bishop of Swansea and Brecon
- Black Welsh people
- Blackmill
- Blaenau Ffestiniog railway station
- Bleddyn Bowen
- Bleddyn Williams
- Bleddyn ap Cynfyn
- Bobi Jones
- Brackla
- Branwen
- Brecknockshire Agricultural Society
- Brecon Beacons Food Festival
- Brecon Cathedral
- Brecon Jazz Festival
- Brecon Mountain Railway
- Brecon and Merthyr Tydfil Junction Railway
- Brian Price (rugby union)
- Bridgend (community)
- Bridgend County Borough Council
- Bridgend Designer Outlet
- Bridgend Ravens
- Britannia
- British Steel (1967–1999)
- British narrow-gauge slate railways
- Brochwel Ysgithrog
- Bronllys Hospital
- Brut y Brenhinedd
- Brychan
- Brycheiniog
- Brymbo Steelworks
- Bryn Bras Castle
- Bryn Celli Ddu
- Brynglas
- Brynle Williams
- Brynley F. Roberts
- Brynmawr and Blaenavon Railway
- Buddug Williams
- Buffy Williams
- Bulwark, Chepstow
- Burry Port
- Burry Port and Gwendraeth Valley Railway
- Butetown branch line
- Bwllfa Colliery
- C. W. L. Bevan
- CAF Newport
- Cabinet Secretary for Education (Wales)
- Cabinet Secretary for Finance (Wales)
- Cabinet Secretary for Health and Social Care (Wales)
- Cadwaladr ap Gruffydd
- Cadwallon Lawhir ap Einion
- Cadwallon ap Madog
- Caerleon
- Caerleon Arts Festival
- Caerphilly
- Caerphilly railway works
- Caerwent
- Calan Gaeaf
- Calan Mai
- Caldicot Castle
- Calennig
- Cambriae Typus
- Cambrian Archaeological Association
- Cambrian News
- Cambrian Way
- Campaign for the Protection of Rural Wales
- Canolfan Tryweryn
- Cantre'r Gwaelod
- Cantref
- Capel House
- Capital South Wales
- Caradog ap Gruffydd
- Cardiff Arms Park Male Choir
- Cardiff Business School
- Cardiff City Council
- Cardiff County Borough Council
- Cardiff Gate
- Cardiff International Pool
- Cardiff International Sports Stadium
- Cardiff Metropolitan Cathedral
- Cardiff Queen Street railway station
- Cardiff and Vale University Health Board
- Cardigan, Ceredigion
- Cardigan Bay Special Area of Conservation
- Cardigan Castle
- Cardigan Lifeboat Station
- Cardigan Priory
- Cardiganshire County Council
- Carew Cross
- Cariad@iaith:love4language
- Carmarthen Bay
- Carmarthen Castle
- Carmarthen West and South Pembrokeshire (UK Parliament constituency)
- Carmarthen and Cardigan Railway
- Carn Menyn
- Carnarvon and Llanberis Railway
- Carnarvonshire Railway
- Carnedd Dafydd
- Carneddau
- Carolyn Thomas
- Castell Dinas
- Castlemartin Training Area
- Cathays railway works
- Cefn Coed Colliery Museum
- Cefn Golau
- Cefn y Brithdir
- Ceiriog Valley
- Celtic Warriors
- Celtic studies
- Centre for Alternative Technology
- Cerdd dafod
- Charles James Jackson
- Charlotte Price White
- Chaz Davies
- Chepstow Racecourse
- Chief Executive and Clerk of the Senedd
- Chirk
- Chirk Aqueduct
- Chirk Castle
- Chris Bryant
- Chris Gunter
- Chris Marustik
- Christine James
- Christmas Evans
- Christopher Painter
- Church of St Aeddan, Bettws Newydd
- Cilgerran
- Cistercian Way (Wales)
- City Bridge
- City Hall, Cardiff
- Clas (ecclesiastical settlement)
- Clement Davies
- Cliff Curvis
- Clwydian Range
- Clydach Vale
- Clynnog Fawr
- Clywedog Reservoir
- Cnapan
- Cockett (electoral ward)
- Coed-y-Brenin
- Coel Hen
- Cogan, Vale of Glamorgan
- Coity
- Coity Castle
- Colorama (band)
- Colwyn Bay
- Communities First
- Connah's Quay
- Conwy
- Conwy County Borough Council
- Cornwall House
- Cosmeston Lakes Country Park
- Cosmeston Medieval Village
- Council for Wales and Monmouthshire
- Council of Wales and the Marches
- Counsel General for Wales
- Countryside Council for Wales
- County Police Act 1839
- Court of Great Sessions in Wales
- Cowbois Rhos Botwnnog
- Cowbridge
- Coychurch Higher
- Coychurch Lower
- Crib Goch
- Cricket in Wales
- Crickhowell
- Cross Keys RFC
- Cross of Neith
- Crown Buildings, Cathays Park
- Crowning of the Bard
- Cultural relationship between the Welsh and the English
- Culture of Gwynedd during the High Middle Ages
- Cunedda
- Curriculum Council for Wales
- Cwm Idwal
- Cwm Taf Morgannwg University Health Board
- Cwmbwrla (electoral ward)
- Cwmhir Abbey
- Cwmhiraeth
- Cymmer, Neath Port Talbot
- Cymreigyddion Society
- Cymru Alliance
- Cymru Fydd
- Cymuned
- Cynddelw Brydydd Mawr
- Cynddylan
- Cyngen ap Cadell
- Cynllibiwg
- Cynog Dafis
- Cynon Valley
- Cân i Gymru
- Cân i Gymru 2009
- Cân i Gymru 2010
- Cân i Gymru 2011
- Côr Godre'r Aran
- D. J. Williams (Welsh nationalist)
- Dafydd ab Edmwnd
- Daniel Evans (Welsh poet)
- Daniel Huws
- Danielle Bux
- Danny Thomas (footballer, born 1985)
- Darren Millar
- Dave Bowen
- Dave Edmunds
- David Brunt
- David Brynmor Jones
- David Davies (swimmer)
- David Evans-Bevan
- David Griffiths (missionary)
- David Jones (missionary)
- David Jones (painter)
- David Lloyd (Welsh politician)
- David Lyn
- David Richards (motorsport executive)
- David Thomas (industrialist)
- David Wynne (composer)
- Dean Saunders
- Deganwy
- Deian Hopkin
- Delme Bowen
- Denbigh
- Denbighshire County Council
- Dennis Coslett
- Desmond Barry
- Development Bank of Wales
- Devil's Bridge, Ceredigion
- Dewi Bebb
- Dictionary of Welsh Biography
- Dill Jones
- Dinas Emrys
- Dinefwr Castle
- Dinerth Castle
- Dingestow Court
- Diocese of Llandaff
- Diocese of Monmouth
- Diocese of St Asaph
- Diocese of St Davids
- Diocese of Swansea and Brecon
- District of Alyn and Deeside
- District of Arfon
- District of Cardiff
- District of Delyn
- District of Llanelli
- District of Montgomeryshire
- District of Newport
- District of Port Talbot
- District of Rhondda
- District of Rhuddlan
- District of Rhymney Valley
- District of Swansea
- Dolforwyn Castle
- Draethen
- Dre-fach Felindre
- Druid's Prayer
- Druids F.C.
- Dryslwyn Castle
- Dunvant and Killay
- Dyfed-Powys Police
- Dyffryn Mymbyr
- Dyffryn Ogwen
- Dyfi Furnace
- Dyfodol i'r Iaith
- Dylan Jones-Evans
- Dylan Thomas Boathouse
- Dylan Thomas Centre
- EMRTS Cymru
- Earl of Lisburne
- Ebbw Vale Garden Festival
- Economy of Swansea
- Eddie Parris
- Eddie Thomas (boxer)
- Edward Charlton, 5th Baron Charlton
- Edward George Bowen
- Edward Lhuyd
- Edward Williams (iron-master)
- Eileen Beasley
- Elan Closs Stephens
- Elan aqueduct
- Elen Egryn
- Elffin ap Gwyddno
- Elin Fflur
- Elin Manahan Thomas
- Elinor Bennett
- Elis Gruffydd
- Elizabeth Andrews
- Elwyn Davies
- Emlyn Williams (trade unionist)
- Encyclopaedia Cambrensis
- Energy in Wales
- English family law
- English property law
- Environment (Wales) Act 2016
- Environment Agency Wales
- Epynt clearance
- Eric Malthouse
- Evan Vincent Evans
- Evangelical Movement of Wales
- Ewenny
- Ewenny Priory
- Expert witnesses in English law
- Extreme points of Wales
- FA Cup Final
- Fair Tax Town
- Fan Dance (exercise)
- Felinfoel Brewery
- Ferndale, Rhondda Cynon Taf
- Ffestiniog
- Ffordd Pen Llech
- Ffred Ffransis
- First Cymru
- First Minister's Questions
- Fishguard
- Fishguard Bay
- Flag of Caernarfonshire
- Flag of Flintshire
- Flag of Glamorgan
- Flag of Monmouthshire
- Flag of Montgomeryshire
- Flag of Saint David
- Flintshire Coalfield
- Foel Cwmcerwyn
- Football Association of Wales
- Football in Wales
- Fourteen Locks
- Francis Homfray
- Frank Hennessy
- Fred Hando
- Free Wales Army
- Friars Walk, Newport
- Funky Dragon
- Gareth Gwenlan
- Gareth Williams, Baron Williams of Mostyn
- Garrod Thomas
- Garth Pier
- Gavin Henson
- Geoff Lewis
- Geology of Monmouthshire
- Geology of Pembrokeshire
- Geology of South Wales
- George Edwards (Welsh footballer)
- George Owen of Henllys
- George Trefgarne, 1st Baron Trefgarne
- Georgia Davies
- Georgia Ruth
- Gildas
- Girlguiding Cymru
- Glamorgan County Cricket Club
- Glamorgan Heritage Coast
- Glan Clwyd Hospital
- Glan Conway Rural District
- Glanmor Williams
- Gleision Colliery mining accident
- Global Centre of Rail Excellence
- Glyder Fawr
- Glyn Davies (politician)
- Glyn Jones (Welsh writer)
- Glyndŵr
- Glyndŵr's Way
- Glynneath
- Glywys
- Glywysing
- God Bless the Prince of Wales
- Gododdin
- Golf in Wales
- Gomer Press
- Goodwick
- Gordon Parry, Baron Parry
- Gorky's Zygotic Mynci
- Goronwy ab Ednyfed
- Gorseinon
- Gowerton (electoral ward)
- Grace Dieu Abbey, Monmouth
- Granville Beynon
- Greg Davies
- Gregory Cameron
- Gregynog Press
- Gren
- Griffith Jones (priest)
- Gruffudd Leiaf
- Gruffydd ap Gwenwynwyn
- Gruffydd ap Llywelyn
- Gruffydd ap Rhydderch
- Gruffydd ap Rhys II
- Grŵp Llandrillo Menai
- Gudwal
- Gwalia Stores
- Gwallter Mechain
- Gweith Gwen Ystrat
- Gwenllian ferch Gruffydd
- Gwenllian of Wales
- Gwent County History
- Gwent Healthcare NHS Trust
- Gwent Police
- Gwyneddigion Society
- Gwynfynydd Gold Mine
- Gŵyl Fair y Canhwyllau
- Hafan y Môr
- Hafotty
- Hanes Taliesin
- Harry Davies (politician)
- Harry Llewellyn
- Haverfordwest
- Haverfordwest (UK Parliament constituency)
- Hawarden Airport
- Hay Festival
- Heno
- Herbert Merrett
- Herbert Wilson
- Hereford, Hay and Brecon Railway
- High Sheriff of Brecknockshire
- High Sheriff of Clwyd
- High Sheriff of Gwent
- High Sheriff of Mid Glamorgan
- High Sheriff of Radnorshire
- High Sheriff of South Glamorgan
- High Sheriff of West Glamorgan
- Hinduism in Wales
- Historic counties of Wales
- History of Swansea
- History of local government in Wales
- History of rugby union matches between Fiji and Wales
- History of the Jews in Wales
- Hits Radio South Wales
- Holt Castle
- Holyhead
- House of Dinefwr
- House of Mathrafal
- Housing and construction in Wales
- How Green Was My Valley
- How Green Was My Valley (film)
- Howard Winstone
- Howell Harris
- Hugh Griffith
- Hugh Owen Thomas
- Hughes of Gwerclas
- Humphrey Llwyd
- Hundred Years' War, 1337–1360
- Hundred Years' War, 1369–1389
- Hundred Years' War, 1415–1453
- Huw Ceredig
- Huw Irranca-Davies
- Huw Jenkins (Welsh businessman)
- Ian "H" Watkins
- Ian Walsh (footballer)
- Ian Watkins (rugby union)
- Ice Arena Wales
- Ifan ab Owen Edwards
- Ifor Williams
- Illtud
- In These Stones Horizons Sing
- Invasions of the British Isles
- Investiture of Edward, Prince of Wales
- Iorwerth ap Bleddyn
- Irene Steer
- Isaac Roberts
- Isca Augusta
- Islam in Wales
- Isle of Anglesey County Council
- Islwyn
- Itinerarium Cambriae
- Ivor Williams
- Jack Kelsey
- Jack Matthews (rugby union)
- Jackson Hall, Cardiff
- Jacqui Gasson
- James Dean Bradfield
- Jamie Baulch
- Jamie Donaldson
- Janet Finch-Saunders
- Jean McFarlane, Baroness McFarlane of Llandaff
- Jeff Banks
- Jemima Nicholas
- Jeremiah Homfray
- Jerry Shea
- Jim Driscoll
- Jim Griffiths
- Jimmy Murphy (footballer)
- Joan, Lady of Wales
- Joanna Page
- John Davies (bishop of St Asaph)
- John Disley
- John Edward Lloyd
- John Elias
- John Evan Thomas
- John Frost (Chartist)
- John Geoffrey Jones
- John Gwilym Jones
- John Hanbury (1664–1734)
- John Jones, Talysarn
- John Jones (Carmarthenshire MP)
- John Knapp-Fisher
- John Nicholl (judge)
- John Ormond
- John Owen (Bishop of St Davids)
- John Rhŷs
- John Williams (Ab Ithel)
- Johnny Basham
- Jones (surname)
- Jones Jones Jones
- Joseph Morewood Staniforth
- Joseph Turner (architect)
- Joshua Anderson Hague
- Julian Hodge
- Julie Williams (scientist)
- Justinian of Ramsey Island
- Karl Francis
- Katheryn of Berain
- Keep Wales Tidy
- Keith Davies
- Keith Rowlands
- Ken Skates
- Kidwelly
- Kidwelly Castle
- King of Wales
- Kingdom of Ceredigion
- Kingdom of Morgannwg
- Korfball in Wales
- La Charrette
- Lake Vyrnwy
- Lake Vyrnwy Straining Tower
- Laleston
- Lammas Ecovillage
- Lampeter
- Landore (electoral ward)
- Landsker Line
- Langstone, Newport
- Laugharne
- Laura Anne Jones
- Laura McAllister
- Lee Congerton
- Leeswood Hall
- Legislative Competence Order
- Leighton Andrews
- List of Welsh Nobel laureates
- List of habitats of principal importance in Wales
- List of villages in Gower
- Literary Welsh morphology
- Literature Wales
- Little England beyond Wales
- Liverpool and North Wales Steamship Company
- Llan (placename)
- Llanberis
- Llanberis Pass
- Llancaiach Branch
- Llandaff and Barry (UK Parliament constituency)
- Llandarcy Oil Refinery
- Llanddewi Brefi
- Llandeilo
- Llandissilio
- Llandovery
- Llandudno
- Llandudno Junction
- Llandysul
- Llanfair Caereinion
- Llanfairfechan
- Llanfairpwll railway station
- Llanfyllin Branch
- Llangefni
- Llangeitho
- Llangollen
- Llangollen International Musical Eisteddfod
- Llangollen Railway
- Llangorse Lake
- Llangynwyd Lower
- Llangynwyd Middle
- Llanharry
- Llanidloes
- Llanidloes and Newtown Railway
- Llanover House
- Llanrwst
- Llansteffan Castle
- Llantrisant
- Llanwddyn
- Llanwern
- Llanwern steelworks
- Llanwrtyd Wells
- Llanybydder
- Llanymynech railway station
- Llyn Brenig
- Llyn Brianne
- Llyn Celyn
- Llyn Cowlyd
- Llyn y Fan Fach
- Llyr Gruffydd
- Llywarch Hen
- Llywelyn's coronet
- Llywelyn ap Seisyll
- Llywydd of the Senedd
- Local health board
- London Welsh Centre
- Lord Lieutenant of Wales
- Lordship of Brecknock
- Lordship of Glamorgan
- Loughor
- Lower Dock Street drill hall, Newport
- Lucy Owen
- Luke Charteris
- Lunacy Act 1845
- Lyn Evans
- M. S. Factory, Valley
- M4 corridor
- MV Sea Empress
- Mach Loop
- Madeleine Moon
- Maenan Abbey
- Maerdy Branch
- Maesteg Line
- Magor with Undy
- Mansel family
- Manuscripts of Wales
- Marble Church, Bodelwyddan
- Maredudd ap Bleddyn
- Margam
- Margam Castle
- Margam Country Park
- Margaret Tisdale
- Marged ferch Ifan
- Maria Jane Williams
- Market Hall, Monmouth
- Mary Wynne Warner
- Mathrafal
- Maurice Turnbull
- Mawr
- Measure of the National Assembly for Wales
- Media of Wales
- Meena Upadhyaya
- Megan Lloyd George
- Meibion Glyndŵr
- Meirionnydd
- Melingriffith Tin Plate Works
- Member of the Senedd
- Members of the 1st National Assembly for Wales
- Members of the 3rd National Assembly for Wales
- Menai Bridge
- Menna Elfyn
- Mererid Hopwood
- Merthyr (UK Parliament constituency)
- Merthyr Tramroad
- Merthyr line
- Mervyn Davies (rugby union)
- Meurig ap Tewdrig
- Michael Gustavius Payne
- Mickey Thomas (footballer)
- Mid-Wales Railway
- Mid Glamorgan County Council
- Mid Wales Hospital
- Minffordd railway station
- Miss Wales
- Moelwyn Merchant
- Mohammad Asghar
- Monmouth Alms Houses
- Monmouth Heritage Trail
- Monmouthshire Beacon
- Monmouthshire Houses
- Montgomery, Powys
- Montgomery Castle
- Mordecai Jones
- Morgan Lloyd
- Morgraig Castle
- Morriston
- Morriston (electoral ward)
- Morriston Hospital
- Mountain Ash, Rhondda Cynon Taf
- Mountain rescue in Wales
- Mounton House
- Mudiad Meithrin
- Mumbles
- Music Theatre Wales
- Music of Cardiff
- Mynydd-bach (electoral ward)
- Mynydd Epynt
- Mynydd Llangatwg
- NHS Direct Wales
- Nant Ffrancon Pass
- Nant Gwynant
- Nantlle Railway
- Natasha Asghar
- Nathan Rogers (writer)
- Nation Radio Wales
- National Curriculum for Wales (2008–2026)
- National Roman Legion Museum
- National Slate Museum
- National Waterfront Museum
- National Wool Museum
- National Youth Orchestra of Wales
- Natural Resources Wales
- Neath
- Nefyn
- Neil Edwards (footballer, born 1970)
- Nelson Garden
- Ness Edwards
- Nest ferch Cadell
- Nest ferch Rhys
- New Inn
- New Quay
- New Tredegar
- Newcastle Emlyn
- Newcastle Emlyn Castle
- Newport, Abergavenny and Hereford Railway
- Newport Castle
- Newport Civic Centre
- Newport Docks
- Newport International Sports Village
- Newport Museum
- Newport RFC
- Newport Transporter Bridge
- Newport built-up area
- Newtown, Powys
- Newtown and Machynlleth Railway
- Neyland
- Nick Ainger
- Nick Ramsay
- Nicky Wire
- Nicole Cooke
- Non-Registered Intermediary
- Non Evans
- Norah Isaac
- North East Wales
- North East Wales NHS Trust
- North Monmouthshire (UK Parliament constituency)
- North Wales Coalfield
- North Wales Medical School
- North Wales Police
- Oakdale, Caerphilly
- Offa's Dyke Path
- Office for the Welsh Legislative Counsel
- Official Harpist to the Prince of Wales
- Ogmore-by-Sea
- Ogmore Castle
- Ogof Craig a Ffynnon
- Ogof Ffynnon Ddu
- Ogof y Daren Cilau
- Old College, Aberystwyth
- Old Colwyn
- Old Market Hall, Llanidloes
- Old Welsh
- One Wales
- Osi Rhys Osmond
- Osian Ellis
- Oswestry, Ellesmere and Whitchurch Railway
- Oswestry and Newtown Railway
- Otter Hole
- Our Lady of Cardigan
- Overton-on-Dee
- Owain Glyndŵr's Parliament House
- Owain Goch ap Gruffydd
- Owain ap Cadwgan
- Owain mab Urien
- Owen Money
- Owen Morgan Edwards
- Owen Sheers
- Owen Thomas Jones
- Oystermouth
- Oystermouth Castle
- PD Ports
- PS Rothsay Castle (1816)
- Padarn
- Pan-Celticism
- Parc y Scarlets
- Parys Mountain
- Patagonian Welsh
- Patent Fuel
- Paul Parry
- Pembrey
- Pembrey Sands Air Weapons Range
- Pembroke Castle
- Pembroke Dockyard
- Pembroke Power Station
- Pembroke and Haverfordwest (UK Parliament constituency)
- Pembrokeshire Coalfield
- Pembrokeshire County Council
- Pen-y-Pass
- Pen y Fan
- Penarth Pier
- Pencoed
- Penderry
- Pendrill Charles Varrier-Jones
- Penllergaer (electoral ward)
- Penllyn Castle
- Penmaenmawr
- Pennal Letter
- Pennard (electoral ward)
- Penrhyn quarry
- Penscynor Wildlife Park
- Penydarren Ironworks
- Penysarn
- Peter's Food Services
- Peter Nicholas (footballer)
- Peter Prendergast (artist)
- Peter Smith (architectural historian)
- Peterston-super-Ely
- Philip Madoc
- Pibgorn (instrument)
- Pierhead Building
- Pill Priory
- Pillgwenlly
- Pistyll Rhaeadr
- Plaid Ifanc
- Pobol y Cwm
- Pontarddulais
- Pontyclun
- Pontypool
- Pontypool, Caerleon and Newport Railway
- Pontypool (UK Parliament constituency)
- Pontypool RFC
- Pontypridd
- Pontypridd Urban District Council
- Port Talbot English
- Port Talbot Parkway railway station
- Port Talbot Railway and Docks Company
- Porth
- Porth Teigr
- Porth yr Ogof
- Porthcawl
- Portskewett
- Powys Archives
- Powys County Council
- Powys Fadog
- Powys Wenwynwyn
- Presbyterian Church of Wales
- Preseli Pembrokeshire
- Preseli Pembrokeshire (UK Parliament constituency)
- President of Welsh Tribunals
- Presteigne
- Presteigne Festival
- Prince of Wales Orthopaedic Hospital, Rhydlafar
- Princes Gate Spring Water
- Princess Lilian, Duchess of Halland
- Principality Building Society
- Priory Gatehouse, Usk
- Prisons in Wales
- Public Health Wales
- Pwllheli
- Pwyll Pendefig Dyfed
- Qualifications Wales
- R. Silyn Roberts
- RAF Carew Cheriton
- RAF Fairwood Common
- RAF Hell's Mouth
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- Red Bandits of Mawddwy
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- Rees Llewellyn
- Register of Landscapes of Historic Interest in Wales
- Rex Willis
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- Rhondda line
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- Rhos, Neath Port Talbot
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- Rhymney line
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- Rhys Gryg
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- Rhys ab Owain
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- Richard Bryn Williams
- Richard Commission
- Richard Llewellyn
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- Riverfront Arts Centre
- Road signs in Wales
- Robert Buckland
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- Rod Richards
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- Roman Catholic Archdiocese of Cardiff-Menevia
- Ronald Waterhouse (judge)
- Roose Hundred
- Rosemary Butler (politician)
- Ross and Monmouth Railway
- Roy Noble
- Royal Cambrian Academy of Art
- Royal Charter Storm
- Royal Commission on the Ancient and Historical Monuments of Wales
- Royal Gwent Hospital
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- Royal Welsh Show
- Ruabon–Barmouth line
- Rumney Railway
- Ruth Bidgood
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- Ruth Reed
- S4C Chwaraeon
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- Senghenydd
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- Shani Rhys James
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- St. Thomas (electoral ward)
- St Aelhaiarn's Church, Guilsfield
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- St David's Hall
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- St Fagans Castle
- Statue of Charles Rolls, Monmouth
- Stella (British TV series)
- Steve Jones (runner)
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- Steve Robinson (boxer)
- Steve Speirs
- Strata Florida Abbey
- Stuart Cable
- Sunday Closing (Wales) Act 1881
- Swallow Falls
- Swansea Bay
- Swansea Bay University Health Board
- Swansea Blitz
- Swansea Market
- Swansea RFC
- Swansea The Mount railway station
- Swansea and Mumbles Railway
- Sybil Thomas, Viscountess Rhondda
- Sycharth
- Sydney Curnow Vosper
- T. E. Ellis
- Taith Joint Board
- Tal-y-coed Court
- Talerddig
- Talgarth
- Talhaiarn
- Talley Abbey
- Tanni Grey-Thompson
- Tarenni Colliery
- Techniquest
- Teddy Morgan
- Teifi Valley Railway
- Tenby
- Tenby Museum and Art Gallery
- Tenby town walls
- Terry Parsons
- The Dispensary, Monmouth
- The Dragon Has Two Tongues
- The Indian Doctor
- The Kymin
- The Princess and the Goblin (film)
- The Rolls Hall, Monmouth
- The Silent Village
- The Vale Resort
- The Welsh at Mametz Wood (painting)
- The White Swan Inn, Monmouth
- Theatre of Wales
- Third Morgan government
- Thomas Charles
- Thomas Howell (bishop)
- Thomas Penson
- Thomas Savin
- Thomas Williams of Llanidan
- Tinkinswood
- Tir na n-Og Award
- Titles of the Welsh Court
- Tommy Vile
- Ton Pentre
- Tondu
- Tonia Antoniazzi
- Tonypandy
- Tonypandy riots
- Torfaen County Borough Council
- Tower Colliery
- Town and country planning in Wales
- Townhill (electoral ward)
- Trawsfynydd nuclear power station
- Trealaw
- Tredegar Medical Aid Society
- Treforest
- Tregwynt Hoard
- Treherbert
- Treorchy
- Tresilian Bay
- Tretower Castle
- Triple harp
- Trostre Steelworks
- Troy House
- Trunk road agent
- Tryfan
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- Tudor Owen (actor)
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- Twelve Knights of Glamorgan
- Tŷ Hafan
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- Undeb Cymru Fydd
- Underwood, Newport
- Undy
- Unionism in Wales
- University Hospital Llandough
- University of Wales Registry
- Uplands (electoral ward)
- Upper Boat Studios
- Urdd Gobaith Cymru
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- Usk
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- Vale of Ewyas
- Vale of Glamorgan Council
- Vale of Glamorgan Festival
- Vale of Neath
- Vale of Neath Railway
- Valerie Davies
- Vaughan Roderick
- Velindre Cancer Centre
- Venta Silurum
- Victoria Terrace, Beaumaris
- Visit Wales
- Vivian Hewitt
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- W. H. Davies
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- WJEC (exam board)
- WRU Division Three East
- WRU Division Three West
- WRU League 1 East
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- Wales A national rugby union team
- Wales Act 1978
- Wales Book of the Year
- Wales Coast Path
- Wales Empire Pool
- Wales Green Party
- Wales Institute for Sustainable Education
- Wales Open
- Wales Route Utilisation Strategy
- Wales and Berwick Act 1746
- Wales and Borders
- Wales at the 2011 Commonwealth Youth Games
- Wales men's national squash team
- Wales national rugby sevens team
- Wales national under-21 football team
- Wales women's national field hockey team
- Wales women's national football team
- Wales women's national rugby union team
- Walter Coffin
- Walter Cradock
- Water privatisation in England and Wales
- Waterfall Country (Wales)
- Welsh 1000 m Peaks Race
- Welsh Agricultural College
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- Welsh Americans
- Welsh Baccalaureate
- Welsh Bicknor
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- Welsh Championship
- Welsh Cup
- Welsh Folk Dance Society
- Welsh Football League
- Welsh Football League Division One
- Welsh Government traffic officer
- Welsh Grand National
- Welsh Historic Gardens Trust
- Welsh Intermediate Education Act 1889
- Welsh Language Board
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- Welsh Marches line
- Welsh Mountain Zoo
- Welsh Mountain sheep
- Welsh National War Memorial
- Welsh Presbyterian Chapel, Charing Cross Road
- Welsh Rarebit (radio programme)
- Welsh Revenue Authority
- Welsh Sinfonia
- Welsh Sports Hall of Fame
- Welsh Wikipedia
- Welsh bagpipes
- Welsh coal strike of 1898
- Welsh dance
- Welsh gold
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- Welsh history in Chicago
- Welsh numerals
- Welsh poetry
- Welsh pop and rock music
- Welsh rugby union system
- Welsh settlement in the Americas
- Welshpool and Llanfair Light Railway
- Weobley Castle, Gower
- When Was Wales?
- Wild Wales
- William Cope, 1st Baron Cope
- William Haggar
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- William Jenkins (coal merchant)
- William Mathias
- William Menelaus
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- William Salesbury
- William Williams (Caledfryn)
- William Wroth
- Williams baronets
- Willie Llewellyn
- Wilmot Vaughan, 1st Earl of Lisburne
- Workingman's Institute and Memorial Hall
- Wrexham, Mold and Connah's Quay Railway
- Wrexham Maelor Hospital
- Wrexham and Ellesmere Railway
- Wylfa nuclear power station
- Wyn Roberts, Baron Roberts of Conwy
- Y Byd
- Y Cymro
- Y Fro Gymraeg
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- Ye Olde Murenger House
- Yes for Wales
- Ynyslas Sand Dunes
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- Ystrad Mynach
- Ystradfellte Reservoir
- Ystradgynlais
- Ystradyfodwg
- .cymru
- 100 Great Welsh Women
- 102.5 Radio Pembrokeshire
- 14 Beaufort Square, Chepstow
- 1707 in Wales
- 1708 in Wales
- 1709 in Wales
- 1710 in Wales
- 1711 in Wales
- 1712 in Wales
- 1713 in Wales
- 1714 in Wales
- 1715 in Wales
- 1716 in Wales
- 1723 in Wales
- 1837 Anglesey by-election
- 1857 Carmarthenshire by-election
- 1861 Pembrokeshire by-election
- 1876 Carmarthen Boroughs by-election
- 1878 Carmarthen Boroughs by-election
- 1881–82 Home Nations rugby union matches
- 1881–82 Welsh Cup
- 1884 Home Nations Championship
- 1885 Home Nations Championship
- 1886 Home Nations Championship
- 1887 Cardiff Town Council election
- 1887 Home Nations Championship
- 1888 Home Nations Championship
- 1889 Cardiff County Borough Council election
- 1889 Carmarthenshire County Council election
- 1889 Home Nations Championship
- 1890 Caernarvon Boroughs by-election
- 1890 Cardiff County Borough Council election
- 1890 Home Nations Championship
- 1891 Home Nations Championship
- 1892 Cardiff County Borough Council election
- 1892 Carmarthenshire County Council election
- 1892 Home Nations Championship
- 1894 Carmarthen Rural District Council election
- 1894 Home Nations Championship
- 1894 Ystradyfodwg Urban District Council election
- 1895 Carmarthenshire County Council election
- 1895 Home Nations Championship
- 1895–96 Welsh Cup
- 1896 Home Nations Championship
- 1896 Welsh Cup final
- 1897 Home Nations Championship
- 1898 Glamorgan County Council election
- 1898 Home Nations Championship
- 1899 Home Nations Championship
- 1901 Glamorgan County Council election
- 1901 Home Nations Championship
- 1903 Home Nations Championship
- 1904 Aberdare Urban District Council election
- 1904 Home Nations Championship
- 1906 Aberdare Urban District Council election
- 1906 Home Nations Championship
- 1907 Aberdare Urban District Council election
- 1907 Home Nations Championship
- 1907–08 Welsh Amateur Cup
- 1908 Aberdare Urban District Council election
- 1908–09 Welsh Amateur Cup
- 1909 Aberdare Urban District Council election
- 1910 Aberdare Urban District Council election
- 1910 Glamorgan County Council election
- 1910 Swansea District by-election
- 1911 South Wales anti-Jewish riots
- 1912 Carmarthen District by-election
- 1912 East Carmarthenshire by-election
- 1912–13 Newport County A.F.C. season
- 1913–14 Newport County A.F.C. season
- 1914–15 Cardiff City F.C. season
- 1914–15 Newport County A.F.C. season
- 1917 South Monmouthshire by-election
- 1919 Carmarthen Rural District Council election
- 1919 Glamorgan County Council election
- 1919 Swansea East by-election
- 1919–20 Cardiff City F.C. season
- 1919–20 Newport County A.F.C. season
- 1920 Cardiff City Council election
- 1920 Rhondda West by-election
- 1920–21 Newport County A.F.C. season
- 1921–22 Newport County A.F.C. season
- 1922 Newport by-election
- 1922–23 Newport County A.F.C. season
- 1923–24 Newport County A.F.C. season
- 1924 Carmarthen by-election
- 1924–25 Newport County A.F.C. season
- 1925 Llandeilo Rural District Council election
- 1925–26 Newport County A.F.C. season
- 1926–27 Newport County A.F.C. season
- 1927–28 Newport County A.F.C. season
- 1928 Cardiff City Council election
- 1928 Carmarthen by-election
- 1928 Welsh Cup final
- 1928–29 Newport County A.F.C. season
- 1929–30 Newport County A.F.C. season
- 1930–31 Newport County A.F.C. season
- 1931–32 Cardiff City F.C. season
- 1931–32 Newport County A.F.C. season
- 1931–32 Welsh Cup
- 1932–33 Cardiff City F.C. season
- 1932–33 Newport County A.F.C. season
- 1932–33 Welsh Cup
- 1933 Rhondda East by-election
- 1933–34 Newport County A.F.C. season
- 1933–34 Welsh Cup
- 1934 Merthyr by-election
- 1934–35 Newport County A.F.C. season
- 1934–35 Welsh Cup
- 1935–36 Cardiff City F.C. season
- 1935–36 Newport County A.F.C. season
- 1936–37 Cardiff City F.C. season
- 1936–37 Newport County A.F.C. season
- 1937 Library (Swansea University)
- 1937–38 Cardiff City F.C. season
- 1937–38 Newport County A.F.C. season
- 1938–39 Newport County A.F.C. season
- 1939 Caerphilly by-election
- 1939–40 Newport County A.F.C. season
- 1940 Swansea East by-election
- 1941 Carmarthen by-election
- 1943 University of Wales by-election
- 1945 Caernarvon Boroughs by-election
- 1945 Newport by-election
- 1945–46 Newport County A.F.C. season
- 1946–47 Cardiff City F.C. season
- 1946–47 Newport County A.F.C. season
- 1947–48 Cardiff City F.C. season
- 1948–49 Cardiff City F.C. season
- 1948–49 Newport County A.F.C. season
- 1949–50 Cardiff City F.C. season
- 1949–50 Newport County A.F.C. season
- 1950 Abertillery by-election
- 1950–51 Newport County A.F.C. season
- 1951–52 Newport County A.F.C. season
- 1952 Neath Rural District Council election
- 1952–53 Newport County A.F.C. season
- 1953–54 Newport County A.F.C. season
- 1954 Aberdare by-election
- 1954–55 Newport County A.F.C. season
- 1955 Wrexham by-election
- 1955–56 Newport County A.F.C. season
- 1956–57 Newport County A.F.C. season
- 1957 Carmarthen by-election
- 1957–58 Newport County A.F.C. season
- 1958–59 Newport County A.F.C. season
- 1959–60 Newport County A.F.C. season
- 1960–61 Newport County A.F.C. season
- 1960–61 Welsh Cup
- 1961–62 Newport County A.F.C. season
- 1962–63 Newport County A.F.C. season
- 1963 Swansea East by-election
- 1963–64 Newport County A.F.C. season
- 1964–65 Newport County A.F.C. season
- 1965–66 Newport County A.F.C. season
- 1966–67 Newport County A.F.C. season
- 1967 Glamorgan County Council election
- 1967–68 Newport County A.F.C. season
- 1968 Wales rugby union tour of Argentina
- 1968–69 Newport County A.F.C. season
- 1969–70 Newport County A.F.C. season
- 1970–71 Newport County A.F.C. season
- 1972 World Amateur Snooker Championship
- 1972–73 Newport County A.F.C. season
- 1973 South Glamorgan County Council election
- 1973–74 Newport County A.F.C. season
- 1974–75 Newport County A.F.C. season
- 1975–76 Newport County A.F.C. season
- 1976–77 Cardiff City F.C. season
- 1976–77 Newport County A.F.C. season
- 1977 South Glamorgan County Council election
- 1977–78 Newport County A.F.C. season
- 1978–79 Newport County A.F.C. season
- 1979–80 Newport County A.F.C. season
- 1979–80 Welsh Cup
- 1980–81 Newport County A.F.C. season
- 1981 South Glamorgan County Council election
- 1981–82 Newport County A.F.C. season
- 1982–83 Newport County A.F.C. season
- 1983 Carmarthen District Council election
- 1983 Preseli District Council election
- 1986–87 Newport County A.F.C. season
- 1987 Carmarthen District Council election
- 1987 Ceredigion District Council election
- 1987 Dinefwr Borough Council election
- 1987–88 Newport County A.F.C. season
- 1988 Wales rugby union tour of New Zealand
- 1988–89 Newport County A.F.C. season
- 1990 Wales rugby union tour of Namibia
- 1990–91 FA Cup
- 1991 Carmarthen District Council election
- 1991 Dinefwr Borough Council election
- 1991 Plaid Cymru presidential election
- 1991 Preseli Pembrokeshire District Council election
- 1991–92 FA Cup
- 1992–93 FA Cup
- 1992–93 League of Wales
- 1993 Dyfed County Council election
- 1993–94 FA Cup
- 1994 Pontins Professional
- 1994–95 FA Cup
- 1995 Carmarthenshire County Council election
- 1995 Powys County Council election
- 1995 Wales rugby union tour of South Africa
- 1995–96 FA Cup
- 1996 South Africa rugby union tour of Argentina and Europe
- 1996 Wales rugby union tour of Australia
- 1996–97 FA Cup
- 1997 United States rugby union tour of Wales
- 1997 Wales rugby union tour of North America
- 1997–98 FA Cup
- 1998 Pontins Professional
- 1998 Welsh Conservatives leadership election
- 1998 Welsh Labour leadership election
- 1998–99 FA Cup
- 1999 Carmarthenshire County Council election
- 1999 Neath Port Talbot County Borough Council election
- 1999 Pontins Professional
- 1999 Powys County Council election
- 1999 World Professional Pool Championship
- 1999–2000 FA Cup
- 1–6 Priory Street, Monmouth
- 2000 Pontins Professional
- 2000–01 FA Cup
- 2001 Cardiff Sevens
- 2001 Swansea East by-election
- 2001 United Kingdom general election in Wales
- 2001–02 Celtic League
- 2001–02 FA Cup
- 2002 Ogmore by-election
- 2002 Wales rugby union tour of South Africa
- 2002–03 Celtic League
- 2002–03 FA Cup
- 2003–04 Celtic League
- 2003–04 FA Cup
- 2003–04 Llanelli Scarlets season
- 2003–04 in Welsh football
- 2004 Bridgend County Borough Council election
- 2004 Cardiff Council election
- 2004 Carmarthenshire County Council election
- 2004 City and County of Swansea Council election
- 2004 Neath Port Talbot County Borough Council election
- 2004 Newport City Council election
- 2004 Powys County Council election
- 2004 Vale of Glamorgan Council election
- 2004 Wales Rally GB
- 2004 Wales rugby union tour of Argentina and South Africa
- 2004–05 Celtic League
- 2004–05 FA Cup
- 2004–05 Llanelli Scarlets season
- 2005–06 Celtic League
- 2005–06 FA Cup
- 2005–06 Llanelli Scarlets season
- 2006–07 FA Cup
- 2006–07 Llanelli Scarlets season
- 2006–07 Welsh League Cup
- 2006–07 in Welsh rugby union
- 2007 FAW Premier Cup final
- 2007–08 FAW Premier Cup
- 2007–08 FA Cup
- 2007–08 Welsh Cup
- 2007–08 Welsh Premier League
- 2008 Carmarthenshire County Council election
- 2008 City and County of Swansea Council election
- 2008 Conwy County Borough Council election
- 2008 FAW Premier Cup final
- 2008 Neath Port Talbot County Borough Council election
- 2008 Newport City Council election
- 2008 Powys County Council election
- 2008 Vale of Glamorgan Council election
- 2008 Wales rugby union tour of South Africa
- 2008 Welsh local elections
- 2008–09 FA Cup
- 2008–09 Principality Premiership
- 2008–09 Welsh Premier League
- 2009 Welsh Labour leadership election
- 2009 Welsh Open (snooker)
- 2009–10 British and Irish Cup
- 2009–10 FA Cup
- 2009–10 Principality Premiership
- 2009–10 Welsh League Cup group stage
- 2009–10 Welsh Premier League
- 2009–10 Welsh Premier Women's League
- 2010 Celtic League Grand Final
- 2010 Welsh Cup final
- 2010–11 British and Irish Cup
- 2010–11 FA Cup
- 2010–11 Principality Premiership
- 2010–11 Welsh Alliance League
- 2010–11 Welsh Cup
- 2010–11 Welsh Football League Division One
- 2010–11 Welsh Premier League
- 2011 Celtic League Grand Final
- 2011 Wales Rally GB
- 2011 Welsh devolution referendum
- 2011–12 British and Irish Cup
- 2011–12 FA Cup
- 2011–12 Pro12
- 2011–12 Welsh Cup
- 2011–12 Welsh Premier League
- 2012 Carmarthenshire County Council election
- 2012 Ceredigion County Council election
- 2012 City and County of Swansea Council election
- 2012 International Rugby Series
- 2012 Newport City Council election
- 2012 North Wales Crusaders season
- 2012 Powys County Council election
- 2012 Welsh local elections
- 2012–13 British and Irish Cup
- 2012–13 FA Cup
- 2012–13 LV Cup
- 2012–13 Pro12
- 2012–13 Welsh Premier League
- 2013 Football League Cup final
- 2013 Great Britain and Ireland heatwave
- 2013 North Wales Crusaders season
- 2013 Wales rugby union tour of Japan
- 2013–14 British and Irish Cup
- 2013–14 FA Cup
- 2013–14 LV Cup
- 2013–14 Premier League
- 2013–14 Pro12
- 2013–14 Scarlets season
- 2013–14 Swansea City A.F.C. season
- 2013–14 Welsh Premier League
- 2013–14 Welsh Premier Women's League
- 2013–14 Welsh Women's Cup
- 2013–2014 Atlantic winter storms in Europe
- 2014 IPC Athletics European Championships
- 2014 Premiership Rugby Sevens Series
- 2014 Tour of Britain
- 2014 Wales rugby union tour of South Africa
- 2014–15 British and Irish Cup
- 2014–15 Cymru Alliance
- 2014–15 FA Cup
- 2014–15 FA Cup qualifying rounds
- 2014–15 LV Cup
- 2014–15 Pro12
- 2014–15 Welsh Premier Women's League
- 2015 Championship 1
- 2015 Minor Counties Championship
- 2015 Premiership Rugby Sevens Series
- 2015 Tour of Britain
- 2015 United Kingdom general election in Wales
- 2015 World Grand Prix
- 2015–16 British and Irish Cup
- 2015–16 FA Cup
- 2015–16 Pro12
- 2015–16 WRU Challenge Cup
- 2015–16 Welsh League Cup
- 2015–16 Welsh Premier League
- 2015–16 Welsh Premier Women's League
- 2016 Minor Counties Championship
- 2016 National Assembly for Wales election
- 2016 Tour of Britain
- 2016 Wales rugby union tour of New Zealand
- 2016 World Grand Prix
- 2016–17 Anglo-Welsh Cup
- 2016–17 British and Irish Cup
- 2016–17 EFL Cup
- 2016–17 FA Cup
- 2016–17 Principality Premiership
- 2016–17 Pro12
- 2016–17 WRU Championship
- 2016–17 Welsh League Cup
- 2016–17 Welsh Premier League
- 2017 Bridgend County Borough Council election
- 2017 Denbighshire County Council election
- 2017 Extreme Sailing Series
- 2017 Isle of Anglesey County Council election
- 2017 Minor Counties Championship
- 2017 Newport City Council election
- 2017 Players Championship (snooker)
- 2017 Tour of Britain
- 2017 Wales Rally GB
- 2017 Wales rugby union tour of Tonga and Samoa
- 2017 Welsh Open (snooker)
- 2017 Wrexham County Borough Council election
- 2017–18 Anglo-Welsh Cup
- 2017–18 British and Irish Cup
- 2017–18 Cardiff City F.C. season
- 2017–18 EFL Cup
- 2017–18 English Football League
- 2017–18 FAW Women's Cup
- 2017–18 FA Cup
- 2017–18 Principality Premiership
- 2017–18 Pro14
- 2017–18 Scarlets season
- 2017–18 WRU Championship
- 2017–18 Welsh Premier League
- 2018 Alyn and Deeside by-election
- 2018 Green Party of England and Wales leadership election
- 2018 Minor Counties Championship
- 2018 Plaid Cymru leadership election
- 2018 Players Championship (snooker)
- 2018 Tour of Britain
- 2018–19 EFL Cup
- 2018–19 English Football League
- 2018–19 FAW Women's Cup
- 2018–19 FA Cup
- 2018–19 Principality Premiership
- 2018–19 WRU Championship
- 2018–19 Welsh League Cup
- 2018–19 Welsh Premier League
- 2019 Inter Games Football Tournament
- 2019 Minor Counties Championship
- 2019 South Wales paternal sex abuse case
- 2019–20 Cymru North
- 2019–20 Cymru Premier
- 2019–20 EFL Cup
- 2019–20 English Football League
- 2019–20 FA Cup
- 2019–20 Indigo Group Premiership
- 2019–20 WRU Championship
- 2019–20 Welsh League Cup
- 2020 Wales Rally GB
- 2020–21 Cymru North
- 2020–21 Cymru Premier
- 2020–21 English Football League
- 2020–21 FA Cup
- 2020–21 National League
- 2020–21 Welsh League Cup
- 2021 Curtis Cup
- 2021 English Football League play-offs
- 2021 National Counties Championship
- 2021–22 Cymru North
- 2021–22 English Football League
- 2021–22 FA Cup
- 2021–22 Scarlets season
- 2021–22 United Rugby Championship
- 2021–22 Wrexham A.F.C. season
- 2022 European Ladies' Team Championship
- 2022 National Counties Championship
- 2022 Newport City Council election
- 2022 Rhondda Cynon Taf County Borough Council election
- 2022 Welsh local elections
- 2022 in Wales
- 2022–23 Ardal NE
- 2022–23 Ardal NW
- 2022–23 Ardal SE
- 2022–23 Ardal SW
- 2022–23 Cymru Premier
- 2022–23 FA Cup
- 2022–23 FA Vase
- 2022–23 Indigo Group Premiership
- 2022–23 Scarlets season
- 2022–23 WRU Championship
- 2022–23 in Welsh football
- 2023 Cardiff Cross Challenge
- 2023 Cardiff riot
- 2023 Six Nations Championship
- 2023 in Wales
- 2023–24 Ardal NW
- 2023–24 Ardal SE
- 2023–24 Ardal SW
- 2023–24 FA Cup
- 2023–24 Premier League Cup
- 2023–24 Scarlets season
- 2023–24 in Welsh football
- 2024 United Kingdom general election in Wales
- 2024 Welsh government crisis
- 2024–25 Welsh Cup
- 203 (Welsh) Multi-Role Medical Regiment
- 2353 (Ystrad Mynach) Squadron ATC
- 27 Old Market Street, Usk
- 2CV 24 Hour Race
- 2 & 2A Well Street, Ruthin
- 2 Grosvenor Road, Wrexham
- 30 Bridge Street, Usk
- 33 Whitecross Street, Monmouth
- 9 Agincourt Street, Monmouth
- A.F.C. Porth
- A. H. Dodd
- A4042 road
- A4059 road
- A4069 road
- A4107 road
- A4119 road
- A4138 road
- A4160 road
- A4161 road
- A4214 road
- A4216 road
- A4221 road
- A4226 road
- A4230 road
- A4240 road
- A4241 road
- A465 road
- A473 road
- A474 road
- A475 road
- A477 road
- A479 road
- A481 road
- A482 road
- A483 road
- A485 road
- A493 road
- A496 road
- A5025 road
- A Child's Christmas in Wales
- Aaron Lewis (footballer)
- Aaron Morris (footballer)
- Abbey Cwmhir Hall
- Abbey Hotel, Llanthony Priory
- Abbey of St Mary, St Dogmaels
- Abbie Trayler-Smith
- Abdulrahim Abby Farah
- Abenbury
- Aber Afon Seiont
- Aber Falls
- Aber Taf
- Aber railway station
- Aber railway station (Gwynedd)
- Aberaman Hall and Institute
- Aberaman North
- Aberangell railway station
- Aberavon (electoral ward)
- Aberavon Beach
- Aberbargoed Grasslands
- Aberbechan Hall
- Aberbeeg
- Abercamlais
- Abercanaid
- Abercarn
- Abercarn railway station
- Abercastle
- Aberconwy Abbey
- Aberconwy House
- Abercorris quarry
- Abercraf
- Abercraf transmitting station
- Abercregan
- Abercwmboi
- Abercwmeiddaw quarry
- Abercych
- Abercynllaith
- Abercynon
- Abercynon Colliery
- Aberdare, Merthyr and Dowlais Miners' Association
- Aberdare (UK Parliament constituency)
- Aberdare Athletic F.C.
- Aberdare East
- Aberdare General Hospital
- Aberdare Girls' School
- Aberdare Hall
- Aberdare Local Board of Health
- Aberdare RFC
- Aberdare RLFC
- Aberdare School Board
- Aberdare Town (electoral ward)
- Aberdare West
- Aberdare railway station
- Aberdovey Lifeboat Station
- Aberdovey railway station
- Aberdulais
- Aberdulais Falls
- Aberedw Castle
- Abereiddy
- Abererch railway station
- Aberfan Cemetery
- Abergavenny Brecon Road railway station
- Abergavenny Food Festival
- Abergavenny Hundred
- Abergavenny Junction railway station
- Abergavenny Priory Deer Park
- Abergavenny RFC
- Abergavenny Thursdays F.C.
- Abergavenny Town Hall
- Abergavenny railway station
- Abergavenny town walls
- Abergavenny transmitting station
- Abergele
- Abergele & Pensarn railway station
- Abergele Golf Club
- Abergele Hospital
- Aberglaslyn Hall
- Aberglasney
- Abergwili
- Abergwili Junction railway station
- Abergwyngregyn
- Abergynolwyn
- Aberkenfig
- Aberllefenni
- Aberllefenni quarries
- Abermawr
- Abermorddu
- Abermule railway station
- Abernant, Rhondda Cynon Taf
- Aberpergwm House
- Aberporth
- Abersoch
- Abersychan
- Abersychan and Talywain railway station
- Aberthaw
- Aberthaw Cement Works
- Aberthaw power stations
- Aberthin
- Abertillery (UK Parliament constituency)
- Abertillery RFC
- Abertillery railway station
- Abertoir
- Abertysswg
- Aberysgir Castle
- Aberystruth
- Aberystwyth Arts Centre
- Aberystwyth Cliff Railway
- Aberystwyth Lifeboat Station
- Aberystwyth Sea2shore Food Festival
- Aberystwyth Town Hall
- Aberystwyth Town Ladies F.C.
- Aberystwyth and Tregaron Bank
- Abraham Matthews
- Abraham Rees
- Academic dress of the University of Wales
- Academy of Medical Educators, United Kingdom
- Acton, Wrexham
- Adam Alexander (horticulturalist)
- Adam Birchall
- Adam Davies (footballer, born 1992)
- Adam Harrison
- Adam Matthews
- Adar Rhiannon
- Adequate Seven
- Aderyn y Corff
- Adi Taviner
- Admiralty Arch, Holyhead
- Adran Premier
- Adre (TV series)
- Adrian Dingle (artist)
- Adrian Lewis Morgan
- Adult Learning Wales
- Adventure Parc Snowdonia
- Adwaith
- Aerdeyrn
- Aeron (kingdom)
- Aeron Express
- Aethwy (electoral ward)
- Afan Lido F.C.
- Afon Braint
- Afon Cennen
- Afon Clarach
- Afon Clywedog
- Afon Col-huw
- Afon Crafnant
- Afon Cych
- Afon Dulas, Llanidloes
- Afon Dwyfor
- Afon Fathew
- Afon Gyffin
- Afon Hepste
- Afon Irfon
- Afon Llyfnant
- Afon Marlais, Pembrokeshire
- Afon Sychryd
- Afon Twrch
- Afon Wen
- Afon Wen railway station
- Age of the Saints
- Agincourt House, Monmouth
- Agnes Twiston Hughes
- Air Wales
- Air Wales (1977)
- Airbus UK Broughton F.C.
- Airways International Cymru
- Alan David (actor)
- Alan Fine (writer)
- Alan Holmes
- Alan Morgan (footballer, born 1973)
- Alan P. F. Sell
- Alan Petherbridge
- Albert Gubay
- Albert L. Harris
- Albert Owen
- Albert Powell (footballer)
- Albion
- Albion Ale House
- Albion Colliery
- Albion Glacigenic Group
- Albro Castle
- Alec Jones
- Alec Templeton
- Aled Brew
- Aled Davies (field athlete)
- Aled Haydn Jones
- Aled Jones
- Aled Roberts
- Aled Rural District
- Aleighcia Scott
- Alex Bray
- Alex Callender
- Alex Davies-Jones
- Alex Gerrard (rugby league)
- Alex Griffiths (cricketer)
- Alex Horton
- Alex Munro (comedian)
- Alex Penny
- Alexa Davies
- Alexander Jones (footballer)
- Alexander Vlahos
- Alexandra (Penarth electoral ward)
- Alexandra Boyd
- Alf Higgs
- Alf Morgans
- Alffa
- Alfred Brice
- Alfred Cattell
- Alfred Davies (footballer)
- Alfred Mathews
- Alfred Neobard Palmer
- Alfred Ollivant (bishop)
- Alfred Onions
- Algernon Islay de Courcy Lyons
- Alia Syed
- Alice Gray Jones
- Alice Griffiths
- Alice Thomas Ellis
- Alice Williams (welfare worker)
- Alison Statton
- All Saints' Church, Oystermouth
- All Saints Church, Ammanford
- All Saints Church, Buttington
- All Saints Church, Deganwy
- All Saints Church, Higher Kinnerton
- All Saints Church, Porthcawl
- All Saints Primary School, Gresford
- All Souls Chapel (Cardiff)
- Allan Jones (footballer, born 1940)
- Allan Rogers
- Allan Watson (American football)
- Allan Yn Y Fan
- Allen Forward
- Allen Raine
- Allt-y-Bela
- Allt y Gaer
- Allt y wern
- Allt yr Esgair
- Alltami
- Alltwalis
- Alltwen
- Alltwen television relay station
- Altaf Hussain (Welsh politician)
- Alun Cairns
- Alun Evans (FAW)
- Alun Ffred Jones
- Alun Gwynne Jones, Baron Chalfont
- Alun Hoddinott
- Alun Huw Davies
- Alun Richards
- Alun School
- Alwen Reservoir
- Alwyn Jones (biophysicist)
- Alwyn Sheppard Fidler
- Alwyn Williams (geologist)
- Alyn and Deeside (UK Parliament constituency)
- Alys ferch Owain Glyndŵr
- Amaethon
- Amanda Bennett (rugby union)
- Amanda Sater, Baroness Sater
- Ambleston
- Ambrose Bebb
- Amelia Womack
- Amlwch
- Amlwch Lighthouse
- Amlwch Town F.C.
- Amman Valley Hospital
- Ammanford Urban District Council
- Ammanford railway station
- Amroth
- Amroth Castle
- Amy Boulden
- Amy Evans (rugby union)
- Amy King (cyclist)
- Amy Parry-Williams
- Amy Roberts
- Anarawd ap Gruffydd
- Ancient Monuments Society
- Andrea Byrne
- Andrea Worrall
- Andrew Davies (darts player)
- Andrew Dawes (brigadier)
- Andrew Jones (filmmaker)
- Andrew Lamerton
- Andrew Pettigrew (landscape gardener)
- Andrew Phillip Smith
- Andrew RT Davies
- Andrew Ranger (politician)
- Andrew Selby
- Andrews Windsor
- Andy Dibble
- Andy Dunbobbin
- Andy John
- Andy Marriott
- Andy Newman
- Andy Pollitt
- Andy Scott-Lee
- Andy Vores
- Andy Whitfield
- Aneirin
- Aneurin Barnard
- Aneurin Rees
- Angela Kwok
- Angela V. John
- Angharad
- Angharad Davies
- Angharad James (poet)
- Angharad Llwyd
- Angharad Mason
- Angharad Rees
- Angharad ferch Owain
- Angle, Pembrokeshire
- Angle Lifeboat Station
- Anglesey Airport
- Anglesey Aluminium
- Anglesey Circuit
- Anglesey Constabulary
- Anglesey Oyster & Welsh Produce Festival
- Anglesey Sea Zoo
- Anglo-Welsh Cup
- Anian (bishop of Bangor)
- Animal Wall
- Anita Thapar
- Anka Bergman
- Ann Maddocks
- Ann Moray
- Anna Filbey
- Anna Fison
- Anna Harris
- Anna Kashfi
- Anna Laetitia Waring
- Anna Maria Bennett
- Annales Cambriae
- Anne Borsay
- Anne Ceridwen Rees
- Anne Denholm
- Anne King, Baroness King
- Annette Bryn Parri
- Annie Lloyd Evans
- Annwn
- Anthony Bushby Bacon
- Anthony Crockett
- Anthony Ellys
- Anthony Kitchin
- Anthony Malarczyk
- Anthony Morgan of Kilfigin
- Anthony Reynolds
- Anthony Rudd
- Antoinette Sandbach
- April McMahon
- Ar Log
- Arawn
- Archaeology of Wales
- Archdeacon of Bangor
- Archibald Hood
- Arddleen railway station
- Ardudwy
- Arenig Fach
- Arfon Griffiths
- Arfon Group
- Argoed High School
- Arianrhod
- Arllechwedd
- Armes Prydein
- Armorial of schools in the United Kingdom
- Arnold le Boteler
- Arnulf de Montgomery
- Arriva Buses Wales
- Art School Girlfriend
- Art in Cardiff
- Artes Mundi
- Arthfael ap Rhys
- Arthur Banks
- Arthur Cheetham
- Arthur Evans (politician)
- Arthur Griffith-Boscawen
- Arthur Harding
- Arthur John Williams
- Arthur Lea (footballer)
- Arthur Rees
- Arthur Symons
- Arthur Wade-Evans
- Arthur Whitford
- Arthur ap Gwynn
- Artificial Limb & Appliance Service
- Arwyn Davies, Baron Arwyn
- Arwystli
- Ash Taylor
- Ashley Bendle
- Assembly Rooms, Presteigne
- Atlantic College Lifeboat Station
- Atlantic Trading Estate
- Atrium, Cardiff
- Attack! Attack! (Welsh band)
- Aubrey Richards
- Audlem railway station
- Audrey Briggs
- Augusta Mostyn
- Augustus Anson
- Austin Matthews
- Azariah Shadrach
- B. R. Rees
- B4265 road
- B4574 road
- BP&GV 4 Kidwelly and 5 Cwm Mawr
- BP Oil Refinery Ltd Ground
- BRfm
- BUCS Super Rugby
- Bachawy
- Bacheldre
- Back Lane drill hall, Newtown
- Bad Wolf (production company)
- Baderon of Monmouth
- Badminton, Blaenau Gwent
- Bagillt
- Baglan (electoral ward)
- Baglan Bay
- Baglan railway station
- Bailey Davies
- Bailey Park, Abergavenny
- Baker Boys (2011 TV series)
- Bakestone
- Bala (New) railway station
- Bala Junction railway station
- Bala Lake Railway
- Bala Town Hall
- Ballet Cymru
- Ballet Nimba
- Balwen Welsh Mountain sheep
- Banc Cambria
- Banc Du
- Banc y Betws
- Bang (TV series)
- Bangor-on-Dee
- Bangor-on-Dee racecourse
- Bangor Bridge
- Bangor City Council
- Bangor Mountain
- Bangor Normal College
- Bangor Town Hall
- Bangor University Boat Club
- Bank y Llong
- Banking and finance in Wales
- Banknotes of the Black Sheep Company of Wales Limited
- Banwen
- Banwy
- Barafundle Bay
- Barbara Adam
- Barbara M. Middlehurst
- Barclodiad y Gawres
- Barddas
- Bardic Grammar
- Bardsey Lighthouse
- Bargoed
- Bargoed Interchange
- Bari Morgan
- Barland Castle
- Barmouth Ferry
- Barmouth Junction and Arthog Tramway
- Barmouth Lifeboat Station
- Barmouth railway station
- Barn, Stable and Cider House, Great Tre-Rhew Farm, Llantilio Crossenny
- Baron Grey of Ruthin
- Baron Hill, Anglesey
- Baron Mansel
- Baron Milford
- Baron Trefgarne
- Baron of Hendwr
- Barrie Vassallo
- Barristers' chambers
- Barry Council Office and Library
- Barry Davies (rugby union, born 1875)
- Barry Dock Lifeboat Station
- Barry Dock Offices
- Barry Docks railway station
- Barry Flanagan
- Barry Jones (boxer)
- Barry Lloyd (cricketer)
- Barry Power Station
- Barry RLFC
- Barry Railway Class J
- Barry Town Council
- Barry Welsh Is Coming
- Basingwerk Abbey
- Basketball Wales National League
- Bassaleg Junction railway station
- Basset Jhones
- Battle of Chester
- Battle of Hatfield Chase
- Battle of Llwchwr
- Battle of Stalling Down
- Bay Pointe
- Bay of Colwyn Town Council
- Bayvil
- Beacon Bog
- Beacon Hill, Monmouthshire
- Beacons Reservoir
- Beacons Way
- Beal railway station
- Bear Hotel, Crickhowell
- Bear Inn, Cowbridge
- Beaufort, Blaenau Gwent
- Beaufort Arms Hotel, Monmouth
- Beaufort railway station (Wales)
- Beaumaris Food Festival
- Beaumaris Gaol
- Beaumaris Town Hall
- Beca (artist group)
- Beca Lyne-Pirkis
- Becky Brewerton
- Beddgelert railway station
- Beddmanarch–Cymyran
- Bedwas
- Bedwas, Trethomas and Machen
- Bedwas High School
- Bedwas Navigation Colliery
- Bedwas RFC
- Bedwellty House
- Bedwellty Pits Halt railway station
- Beer in Wales
- Begelly
- Beli ap Rhun
- Belle Vue Park
- Bellevue Park, Wrexham
- Bellwin scheme
- Ben Bowen Thomas
- Ben Davies (footballer, born 1993)
- Ben Davies (tenor)
- Ben Jones (Welsh solicitor)
- Ben Llewellin
- Ben Swallow
- Ben Thompson (footballer, born 2002)
- Ben Watts-Jones
- Ben Williams (rugby union, born 2002)
- Benedict Nichols
- Benjamin Bathurst (MP for Gloucester)
- Benjamin Gummow
- Benjamin Hoadly
- Benjamin Price (bishop)
- Benllech
- Bentlass
- Benton Castle
- Berllan-deg, Llanhennock
- Bernard (Bishop of St Davids)
- Bernard Lloyd
- Berriew
- Bersham
- Bersham Ironworks
- Bert Dauncey
- Bert Winfield
- Berthin Brook
- Bertholey House
- Berwyn Price
- Berwyn Rowlands
- Berwyn range
- Beth Morris
- Beth Reekles
- Bethan Dainton
- Bethan Dyke
- Bethan Gammon
- Bethania Chapel, Abercynon
- Bethania Chapel, Cwmbach
- Bethania Chapel, Dowlais
- Bethania Chapel, Mountain Ash
- Bethany Chapel, Ammanford
- Bethel, Anglesey
- Bethel, Gwynedd
- Bethel Baptist Chapel, Llanelli
- Bethel Chapel, Abernant
- Bethel Chapel, Gadlys
- Bethel Chapel, Miskin
- Bethel Chapel, Ynysybwl
- Bethesda, Pembrokeshire
- Bethesda Athletic F.C.
- Bethesda Chapel, Abercwmboi
- Bethesda Chapel, Merthyr Tydfil
- Bethlehem Chapel, Mountain Ash
- Beti George
- Betsan Moses
- Bettisfield railway station
- Bettws, Bridgend
- Bettws, Newport
- Bettws Newydd
- Betws, Carmarthenshire
- Betws-y-Coed
- Betws-y-Coed railway station
- Betws Bach
- Betws Bledrws Church
- Beulah Calvinistic Methodist Chapel
- Beulah Speckled Face
- Beuno
- Beverley Jones
- Beyond the Border Storytelling Festival
- Bible College of Wales, Sketty
- Biblins Bridge
- Big Leaves
- Bigsweir Bridge
- Bill Beynon
- Bill Davies (cricketer, born 1901)
- Bill Morris (rugby union, born 1869)
- Bill Morris (rugby union, born 1941)
- Bill Roberts (footballer, born 1859)
- Bill Tamplin
- Bill Webber (trade unionist)
- Billy Bancroft
- Billy Davies (cricketer, born 1936)
- Billy Hullin
- Billy Jenkins (rugby union)
- Billy McBryde
- Billy Rogers (footballer)
- Billy Slade
- Binding over
- Birchgrove, Swansea
- Birchgrove railway station
- Birdshill Quarry
- Bishop's Palace, Llandaff
- Bishop Gore School
- Bishop of Wrexham
- Bishops Pond
- Bishops and Clerks
- Bishopston, Swansea
- Bishopston Comprehensive School
- Bishton
- Bitter Harvest (1963 film)
- Black Book of Chirk
- Black Boy Inn
- Black Mountain (hill)
- Black Welsh Mountain sheep
- Black and Tan Terrier
- Blackmill Woodlands
- Blackpill
- Blackpool Mill
- Blackwood RFC
- Blackwood railway station (Wales)
- Blaenau Ffestiniog (Pantyrafon) railway station
- Blaenau Gwent County Borough Council
- Blaenau Gwent People's Voice
- Blaenavon High Level railway station
- Blaenavon Hospital
- Blaenavon Railroad
- Blaencwm
- Blaengarw
- Blaengavenny Farmhouse, Llanvihangel Crucorney
- Blaengwrach
- Blaengwynfi railway station
- Blaenllynfi Castle
- Blaenplwyf Halt railway station
- Blaenplwyf transmitting station
- Blaenrhondda
- Blaenwaun
- Blaina railway station
- Blanche Duncan
- Bleddfa Castle
- Bledri ap Cydifor
- Bleiddud
- Blestium
- Bletherston
- Blondin (quarry equipment)
- Blood Bikes Wales
- Blue Lagoon Water Park, Pembrokeshire
- Bluestone, Pembrokeshire
- Board of Control for Lunacy and Mental Deficiency
- Bob John
- Bob Morgan (diver)
- Bob Roberts (footballer, born 1863)
- Bobbie Cheema-Grubb
- Bodedern
- Bodedern Athletic F.C.
- Bodorgan
- Bodorgan Hall
- Bodorgan railway station
- Bodowyr
- Bodrhyddan Hall
- Bon-y-maen (electoral ward)
- Boncath
- Bonedd Gwŷr y Gogledd
- Bontnewydd Palaeolithic site
- Bonvilston
- Book of Llandaff
- Book of the Anchorite of Llanddewibrefi
- Border Breweries (Wrexham)
- Borderlands line
- Borras
- Borth
- Borth Animalarium
- Borth Lifeboat Station
- Bosherston
- Boston Lodge
- Boston Lodge Halt railway station
- Boulston
- Bournville (Mon) Halt railway station
- Boverton
- Bow Street, Ceredigion
- Boxing in Wales
- Boy Azooga
- Boys Village
- Brace's Bakery
- Bradley, Wrexham
- Bragdy Nant
- Braich-y-Dinas
- Braichgoch slate mine
- Brangwyn Hall
- Branwen ferch Llŷr
- Brawdy
- Brayden Clarke
- Brayley Reynolds
- Breanne Loucks
- Brechfa
- Brechfa Forest
- Brechfa transmitting station
- Brecknock Wildlife Trust
- Brecon Beacons Mountain Centre
- Brecon Congregational Memorial College
- Brecon East
- Brecon Forest Tramroad
- Brecon Free Street railway station
- Brecon Guildhall
- Brecon Old Bank
- Brecon VHF-FM transmitting station
- Brecon War Memorial Hospital
- Brecon transmitting station
- Breidden Hill
- Bremia (fort)
- Brenhinoedd y Saeson
- Brenin Llwyd
- Brett Johns
- Bretton, Flintshire
- Brewery Field
- Brian Curvis
- Brian Gibbons (politician)
- Brian Godfrey
- Brian Hibbard
- Brian Jenkins (politician)
- Brian John
- Brian Law
- Brian Masters
- Brian Thomas (rugby union)
- Brian Walsh (English footballer)
- Bridell
- Bridge Meadow Stadium
- Bridgend & District League
- Bridgend (UK Parliament constituency)
- Bridgend Blue Bulls
- Bridgend Deanery
- Bridgend railway station
- Bridget Bevan
- Brimmon Oak
- Bringing Back the Bluestones
- Brinley Richards
- Britain's Best Drives
- Britannia Catchments Group
- Brithdir Mawr
- British Airways Engineering
- British Hard Court Championships
- British Rail Class 398
- British and Irish Cup
- Briton Ferry
- Briton Ferry East
- Briton Ferry Llansawel A.F.C. Ladies
- Briton Ferry railway station
- Briton Ferry television relay station
- Bro Ardudwy
- Bro Ddyfi Community Hospital
- Bro Machno
- Bro Morgannwg NHS Trust
- Bro Rhosyr
- Broad Haven
- Broad Haven South
- Broad Vein Mudstone Formation
- Brofiscin Quarry
- Broneirion
- Bronllys
- Bronllys Castle
- Bronwydd
- Bronwydd Arms railway station
- Bronwydd Arms transmitting station
- Bronwydd Castle
- Brook Street drill hall, Welshpool
- Broughton, Flintshire
- Broughton, Wrexham
- Broughton Bay
- Broughton United F.C.
- Broughton railway station (Wales)
- Brown's Hotel, Laugharne
- Bruce Tasker
- Brut y Tywysogion
- Brycheiniog (journal)
- Brymbo Fossil Forest
- Brymbo Institute Cricket and Football Club
- Brymbo Victoria F.C.
- Bryn, Neath Port Talbot
- Bryn Allen
- Bryn Arw
- Bryn Beryl Hospital
- Bryn Fôn
- Bryn Griffiths
- Bryn Gwyn stones
- Bryn Jones (footballer, born 1912)
- Bryn Law
- Bryn Merrick
- Bryn Oer Tramway
- Bryn Powell
- Bryn Pydew
- Bryn Seion Chapel
- Bryn Williams
- Bryn y Neuadd Hospital
- Brynach
- Brynamman
- Brynbella
- Brynberian
- Bryncelyn Brewery
- Bryncethin RFC
- Bryncoch RFC
- Brynderi House, Llantilio Crossenny
- Bryndraenog
- Bryngwran
- Bryngwyn railway station
- Brynhenllan
- Brynithel
- Brynmawr
- Brynmawr Experiment
- Brynmawr Furniture
- Brynmawr RFC
- Brynmawr railway station
- Brynmenyn
- Brynmill
- Brynmor John
- Brynmor Williams
- Brynna
- Brynrefail
- Brynrefail, Gwynedd
- Bryntirion Athletic F.C.
- Bryntysilio Hall
- Buan, Gwynedd
- Buarth-y-Gaer
- Buchedd Garmon
- Buckholt, Monmouthshire
- Buckland Hill
- Buckley Victoria F.C.
- Buckley baronets
- Buckley railway station
- Buddhism in Wales
- Buddig Anwylini Pughe
- Buddug Verona James
- Buddugre Castle
- Buellt
- Bugeilio'r Gwenith Gwyn
- Building stones of Wales
- Builth Castle
- Builth Road railway station
- Builth Wells
- Builth Wells Hospital
- Builth Wells transmitting station
- Bulkeley Hotel
- Burfa Castle
- Burgess Gate
- Burgred of Mercia
- Burke Shelley
- Burry Port Harbour
- Burry Port Lifeboat Station
- Burry Port Urban District
- Burton, Pembrokeshire
- Burton Mere Wetlands
- Business rates in Wales
- Bussy Mansel, 4th Baron Mansel
- Bussy Mansell (1623–1699)
- Butlin's Barry Island
- Butlin's Pwllheli
- Buttington Oak
- Buttrills
- Buwch Frech
- Bwlch
- Bwlch-y-Ddeufaen
- Bwlch y Groes
- Bwlch y Slaters quarry
- Bwlchgwyn
- Bwlchygroes
- Bynea (electoral ward)
- C'mon Midffîld!
- CAFOD
- CCB Centre for Sporting Excellence
- CPC Bears
- Cabinet Secretary for North Wales
- Cabinet Secretary for Rural Affairs (Wales)
- Cad Goddeu
- Cadafael, King of Gwynedd
- Cadair Berwyn
- Cadair Berwyn North Top
- Cadair Fawr
- Cadell ap Gruffydd
- Cadfael (TV series)
- Cadfan Stone
- Cadfan ap Cadwaladr
- Cadoc (electoral ward)
- Cadole
- Cadoxton-juxta-Neath
- Cadoxton Court Dovecote
- Cadoxton River
- Cadoxton railway station
- Cadwaladr
- Cadwallader Owen
- Cadwallon ap Cadfan
- Cae Llwyd Reservoir
- Cae Mabon
- Caeau Ffos Fach
- Caeau Pant-y-Bryn
- Caego
- Caer Bach
- Caer Drewyn
- Caer Euni
- Caer Llan
- Caer Llugwy
- Caer Lêb
- Caer y Twr
- Caerau, Cardiff
- Caerdroia
- Caerdydd (TV series)
- Caerfai Bay
- Caerfanell
- Caerfyrddin (UK Parliament constituency)
- Caergwrle Bowl
- Caergwrle railway station
- Caerhendy transmitting station
- Caerhowel Bridge
- Caerhun
- Caerleon Comprehensive School
- Caerleon Endowed School
- Caerleon Roman Fortress and Baths
- Caerleon railway station
- Caernarfon Airport
- Caernarfon Barracks
- Caernarfon Criminal Justice Centre
- Caernarfon Deanery
- Caernarfon Mithraeum
- Caernarfon Wanderers F.C.
- Caernarvon (Morfa) railway station
- Caernarvon railway station
- Caernarvonshire Constabulary
- Caerphilly County Borough Council
- Caerphilly Food Festival
- Caerphilly RFC
- Caerphilly railway station
- Caersws
- Caersws F.C.
- Caersws railway station
- Caerwent Training Area
- Caerwys
- Caerwys Town Hall
- Caesar Jenkyns
- Caia Park
- Cairn Newton-Evans
- Caitlin Lewis
- Calchfynydd
- Caldey Lighthouse
- Caldey Priory
- Caldicot
- Caldicot Castle (electoral ward)
- Caldicot School
- Caldicot and Wentloog Levels
- Caldicot railway station
- Caleb Rees
- Calfaria Baptist Chapel, Llanelli
- Calfaria Chapel, Abercynon
- Calfaria Chapel, Penygroes
- Callum Jones (footballer, born 2001)
- Callum Jones (footballer, born 2002)
- Callum King-Harmes
- Callum Scott Howells
- Calon FM
- Calum Jarvis
- Calvert's Engine
- Cambergi quarry
- Cambrian Airways
- Cambrian Coast Express
- Cambrian Colliery
- Cambrian Miners' Association
- Cambrian Woollen Mill
- Cambro-Normans
- Cameron Congreve
- Cameron Toshack
- Campaign for National Parks
- Campanile, Portmeirion
- Campbell's Platform railway station
- Camrose, Pembrokeshire
- Camrose, Pembrokeshire (electoral ward)
- Canada at the 1958 British Empire Games
- Canaston Bridge
- Candelas (band)
- Canoe Wales
- Canolfan Soar
- Cantref Gwarthaf (Dyfed)
- Cantref Reservoir
- Capel-y-ffin
- Capel Als, Llanelli
- Capel Bangor railway station
- Capel Celyn
- Capel Eidalwyr
- Capel Heol Awst, Carmarthen
- Capel Heol Dŵr, Carmarthen
- Capel Newydd, Nanhoron
- Capel Peniel
- Capel Salem, Llanbedr
- Capet–Plantagenet feud
- Capital North West & Wales
- Capital Tower, Cardiff
- Capitol Centre, Cardiff
- Capriccio (Rex Whistler)
- Captain Beany
- Cara Hope
- Caradoc
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- Caradoc of Llancarfan
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- Carantoc
- Cardiff Amateur Athletic Club
- Cardiff Athletic Bowls Club
- Cardiff Athletics Stadium
- Cardiff Bay Barrage
- Cardiff Bay Development Corporation
- Cardiff Bay Opera House
- Cardiff Bay Police Station
- Cardiff Bay Visitor Centre (1991–2010)
- Cardiff Blitz
- Cardiff Centenary Walk
- Cardiff City Blue Dragons
- Cardiff Coloured Men's Christian Association
- Cardiff Corinthians F.C.
- Cardiff Cricket Club
- Cardiff Cross Challenge
- Cardiff Crown Court
- Cardiff Deanery
- Cardiff Design Festival
- Cardiff East (UK Parliament constituency)
- Cardiff Empire
- Cardiff Half Marathon
- Cardiff Heliport
- Cardiff High School
- Cardiff International Sports Village
- Cardiff International White Water
- Cardiff Lions
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- Cardiff Metropolitan University F.C.
- Cardiff Newsagent Three
- Cardiff Roller Collective
- Cardiff Roman Fort
- Cardiff Rural District
- Cardiff Sailing Centre
- Cardiff School of Law and Politics
- Cardiff Start
- Cardiff Team
- Cardiff Town Hall
- Cardiff United Synagogue
- Cardiff University School of Music
- Cardiff University Students' Union
- Cardiff Waterbus
- Cardiff West Community High School
- Cardiff West services
- Cardiff urban area
- Cardigan Bay Seafood Festival
- Cardigan Guildhall
- Cardigan Island
- Cardigan River and Food Festival
- Cardigan Welsh Corgi
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- Cardigan railway station
- Cardigan transmitting station
- Carew, Pembrokeshire
- Carew (electoral ward)
- Carew Castle
- Carey Morris
- Carillons (Williams)
- Carl Llewellyn
- Carl Roberts (cricketer)
- Carl Sargeant
- Carlisle Castle Hotel
- Carmarthen Bank
- Carmarthen Borough Council
- Carmarthen Deanery
- Carmarthen Dragons
- Carmarthen Furnace Bank
- Carmarthen Guildhall
- Carmarthen Priory
- Carmarthen Town North
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- Carmarthen Town West
- Carmarthen railway station
- Carmarthen transmitting station
- Carmarthenshire Land Sailing Club
- Carmel Chapel, Penrhiwceiber
- Carmel Chapel, Trecynon
- Carmel Napier
- Carmel National Nature Reserve
- Carmel transmitting station
- Carn Llidi
- Carnarvon (Pant) railway station
- Carnarvon United F.C.
- Carnarvon and Denbigh Herald
- Carndochan Castle
- Carneddau ponies
- Carnllundain
- Carno railway station
- Carole Seymour-Jones
- Caroline Street (Cardiff)
- Carolyn Harris
- Carreg Cadno
- Carreg Cennen Disturbance
- Carreg Dwfn
- Carreg Samson
- Carrie Jones (footballer)
- Carry On Up the Khyber
- Caryl Ap Rhys Pryce
- Caryl Lewis
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- Carys Bannister
- Casey Thomas
- Castell Aberlleiniog
- Castell Bryn Gwyn
- Castell Coch Woodlands and Road Section
- Castell Du
- Castell Gwallter
- Castell Henllys
- Castell Malgwyn
- Castell Mawr Rock
- Castell Meredydd
- Castell Moel
- Castell Nadolig
- Castellan, Pembrokeshire
- Castellau
- Castle, Swansea
- Castle (Abergavenny ward)
- Castle Bank
- Castle Caereinion
- Castle Farmhouse, Raglan
- Castle Hotel, Conwy
- Castle Hotel, Ruthin
- Castle House, Usk
- Castle Nimble
- Castle Terrace, Chepstow
- Castle Tump
- Castlebythe
- Castleland
- Castlemartin, Pembrokeshire
- Castlemartin Hundred
- Castlemorris
- Catfish and the Bottlemen
- Cath Palug
- Cathays (electoral ward)
- Cathays Cemetery
- Cathedine
- Catherine Fisher
- Catherine Glyn Davies
- Catherine Margretta Thomas
- Catherine Thomas
- Catherine Tregenna
- Cathole Cave
- Catholic Bishops' Conference of England and Wales
- Catholic Record Society
- Catrin Collier
- Catrin Dafydd
- Catrin Finch
- Catrin Stewart
- Catrin Thomas
- Catrin ferch Gruffudd ap Hywel
- Cawdor Hall
- Cedewain
- Cedryn Quarry Tramway
- Cefin Campbell
- Cefn-coed-y-cymmer
- Cefn-y-Bedd railway station
- Cefn Blaenau
- Cefn Bryn
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- Cefn Cil Sanws
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- Cefn Cribwr
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- Cefn Druids A.F.C.
- Cefn Eglwysilan
- Cefn Gwyngul
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- Cefn Mawr
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- Cefn Sidan
- Cefn Viaduct, Wrexham
- Cefni Hospital
- Cefnllys
- Cefnpennar
- Cefntilla Court
- Cei Llydan railway station
- Ceibwr Bay
- Ceiniog
- Ceinwen Rowlands
- Ceiriog Ucha
- Celia Barlow
- Celtic Challenge
- Celtic Classic
- Celtic Congress
- Celtic Cup (2018 rugby union tournament)
- Celtic longboat
- Celtica (visitor centre)
- Celtica Radio
- Cemaes
- Cemaes Rural District
- Cemais (Dyfed)
- Cemais Is Nyfer
- Cemais Uwch Nyfer
- Cemlyn Bay and lagoon
- Cemmaes railway station
- Cemmes Road railway station
- Cenarth
- Cenarth (electoral ward)
- Census Act 1800
- Centre for Health and International Relations
- Centre for Occupational and Health Psychology
- Centre for Welsh Studies
- Ceredigion & Mid Wales NHS Trust
- Ceredigion Archives
- Ceredwen
- Ceri Morgan
- Cerrigydrudion
- Cerys Hale
- Cewydd
- Chad Bond
- Chain Bridge (Berwyn)
- Chamberlain of North Wales
- Chapel Bay Fort
- Chapel Farmhouse, Llanarth
- Chapel House, Monmouth
- Chapel of St Non
- Chapter Arts Centre
- Charity Commission for England and Wales
- Charles Ashton (historian)
- Charles Danby
- Charles Edwards (Labour politician)
- Charles Edwards (writer)
- Charles Edwin (died 1756)
- Charles Edwin (died 1801)
- Charles Evan-Thomas
- Charles Griffith-Wynne
- Charles Hanbury-Tracy, 1st Baron Sudeley
- Charles Hanbury Williams
- Charles Harington (chemist)
- Charles Langbridge Morgan
- Charles Lewis (rugby union)
- Charles Lloyd (minister)
- Charles Morgan (Breconshire MP, born 1736)
- Charles Reece Pemberton
- Charles Sidney Beauclerk
- Charles Symmons
- Charles Taylor (rugby union)
- Charlie Jones (footballer, born 1899)
- Charlie Pritchard
- Charlie Savage (footballer)
- Charlotte Godley
- Chartist Mural
- Chartist Tower
- Chateau Rhianfa
- Cheese Market, Hay-on-Wye
- Chepstow Community Hospital
- Chepstow Museum
- Chepstow Port Wall
- Chepstow RFC
- Chepstow Town Gate
- Chepstow War Memorial
- Chepstow railway station
- Cheryl Beer
- Cheryl Foster
- Chester and Connah's Quay Railway
- Chester and Wrexham Turnpike
- Chicago Tafia
- Chicago Welsh Societies
- Chief Whip (Wales)
- Children's Commissioner for Wales
- Children (Abolition of Defence of Reasonable Punishment) (Wales) Act 2020
- Chirk Community Hospital
- Chirk Tunnel
- Chirk Viaduct
- Chirk War Memorial
- Chirk railway station
- Chloe Williams (footballer)
- Chloe Williams (golfer)
- Choosing the Common Good
- Chris Bromham
- Chris Evans (footballer)
- Chris Hallam
- Chris Jenkins (boxer)
- Chris Rees
- Chris Rees (badminton)
- Chris Ruane
- Chris Slade
- Chris Tally Evans
- Chris Twiddy
- Christ Tshiunza
- Christ the Word Catholic School
- Christchurch, Newport
- Christian Norton
- Christine Gwyther
- Christine Jones (artist)
- Christine Pritchard
- Christopher Dawson
- Christopher J. Yorath
- Christopher Love
- Christopher Rees
- Church Bay, Anglesey
- Church Farmhouse, Caldicot
- Church Farmhouse, Kemeys Commander
- Church Island (Anglesey)
- Church Road (B&MJR) railway station
- Church Stoke
- Church Street, Monmouth
- Church Village
- Church of All Saints, Kemeys Commander
- Church of All Saints, Llanelli
- Church of Our Lady and St Michael, Abergavenny
- Church of St Basil, Bassaleg
- Church of St Denys, Lisvane
- Church of St Dogfael, Meline
- Church of St Illtyd, Mamhilad
- Church of St Illtyd, Penrice
- Church of St Margaret Marloes, Eglwyscummin
- Church of St Mary Magdalene, Goldcliff
- Church of St Mary and St Michael, Llanarth
- Church of St Mary the Virgin, Halkyn
- Church of St Mary the Virgin, Llanfair Kilgeddin
- Church of St Maughan, Llangattock Vibon Avel
- Church of St Michael, Cilycwm
- Church of St Michael and All Angels, Aberystwyth
- Church of St Michael and All Angels, Castlemartin, Pembrokeshire
- Church of St Michael and All Angels, Gwernesney
- Church of St Nefydd and St Mary, Llannefydd
- Church of St Nicholas, Grosmont
- Church of St Nicholas, Trellech
- Church of St Oudoceus, Llandogo
- Church of St Peter, St Paul and St John, Llantrisant
- Church of St Stephen and St Tathan, Caerwent
- Church of St Thomas, Redwick
- Church of St Thomas a Becket, Shirenewton
- Church of St Thomas à Becket, Wolvesnewton
- Church of St Tysilio and St Mary, Meifod
- Church of the Holy Cross, Kilgwrrwg
- Church of the Holy Cross, Mwnt
- Church of the Resurrection, Ely
- Chwarae Teg
- Chwarel Ddu quarry
- Cigfa
- Cilan Head
- Cilcain
- Cilfrew television relay station
- Cilfynydd
- Cilgerran Castle
- Cilgerran Hundred
- Cilgwyn quarry
- Ciliau-Aeron Halt railway station
- Cilrhedyn
- Cilthriew, Kerry (Montgomeryshire)
- Cilybebyll
- Cilycwm transmitting station
- Cilymaenllwyd
- Cimla
- Cinema of Wales
- Circuit court
- Circuit of Wales
- Circuits of England and Wales
- Civil Mediation Council
- Civil Service (Wrexham) Cricket and Football Club
- Claims management company
- Claire Jones (harpist)
- Claire Skinner (footballer)
- Clandestine Marriages Act 1753
- Clara Novello Davies
- Clarbeston
- Clarbeston Road and Letterston Railway
- Clarbeston Road railway station
- Claud Morris
- Claudy Philips
- Clausen Rolling Platform
- Clawdd-du
- Clawdd Coch
- Clayton Blackmore
- Clayton Milborne
- Cleddau Bridge
- Cleddon Bog
- Cleddon Hall
- Cledwyn Hughes (author)
- Cleft chin murder
- Clegir Mawr
- Clegyr Boia
- Clem Thomas
- Clera
- Cliff Pritchard
- Cliff Williams (rugby union, born 1898)
- Clifford Darby
- Clifford Evans (actor)
- Clive Rowlands
- Clive Shell
- Clocaenog Forest
- Clogau Gold Mine
- Clogwyn Du'r Arddu
- Clogwyn railway station
- Clough Williams-Ellis
- Clunderwen railway station
- Cluniac priories in Great Britain
- Clwb Ifor Bach
- Clwb Rygbi
- Clwt-y-bont
- Clwyd South (UK Parliament constituency)
- Clwydian Way
- Clydach, Monmouthshire
- Clydach, Swansea
- Clydach Gorge
- Clydach House, Llanelly
- Clydach railway station
- Clydau
- Clydog
- Clynderwen
- Clyne Castle
- Clyne Gardens
- Clyne River
- Clyne Valley Country Park
- Clytha Castle
- Coal Exchange
- Coalbrookvale
- Cobden's Hotel
- Cobourg Hotel
- Cockett
- Cockett railway station
- Coed-y-gelli, Llanarth
- Coed Coch
- Coed Cochion Quarry
- Coed Cwm Einion
- Coed Nant Mawr
- Coed y Bedw
- Coedcanlas
- Coedffranc West
- Coedty Reservoir
- Cofi dialect
- Cogan railway station
- Colbren Junction railway station
- Colby Woodland Garden
- Cold Blow
- Cold Inn
- Coldbrook Park
- Coleford, Monmouth, Usk and Pontypool Railway
- Coleg Cambria
- Coleg Cymraeg Cenedlaethol
- Coleg Cymunedol Y Dderwen
- Coleg Glan Hafren
- Coleg Llandrillo
- Coleg Sir Gâr
- Colin Gale
- Colin H. Williams
- Colin Jones (artist)
- Colin Stephens
- Colin Woods
- Collen
- Colwinston
- Colwyn Bay Community Hospital
- Colwyn Bay Deanery
- Colwyn Bay F.C.
- Colwyn Bay railway station
- Commercial Street, Newport
- Commission on Justice in Wales
- Commissioner of Bankruptcy (England and Wales)
- Commote
- Community Archives Wales
- Compton Census
- Con Passionate
- Conan Meriadoc
- Congar of Congresbury
- Conglog quarry
- Connah's Quay F.C.
- Connor Evans (footballer)
- Connor Lemonheigh-Evans
- Connor Morgans
- Conscientious objectors in Wales
- Constables' Central Committee
- Constitution Hill, Aberystwyth
- Construction History Society
- Contact Centre Cymru
- Conway Road Methodist Church
- Conway and Llanrwst Railway
- Conwil railway station
- Conwy (Assembly constituency)
- Conwy (electoral ward)
- Conwy Bay
- Conwy Borough F.C.
- Conwy Celts
- Conwy Falls
- Conwy Guildhall
- Conwy Hospital
- Conwy Suspension Bridge
- Conwy Town Council
- Conwy railway station
- Cool Cymru
- Copthorne Hotel, Cardiff
- CorCenCC
- Coraniaid
- Corbett Arms Hotel
- Corgi Socks
- Corn Du
- Corndon Hill
- Corntown
- Corporate Joint Committee
- Corpus Christi Roman Catholic High School, Cardiff
- Corris
- Corris Craft Centre
- Cors Bodwrog
- Cors Fochno
- Cors Gyfelog National Nature Reserve
- Corwen
- Corwen East railway station
- Cory Band
- Cosheston
- Cosheston Group
- Council Offices, Caernarfon
- County Hall, Aberaeron
- County Hall, Caernarfon
- County Hall, Carmarthen
- County Hall, Cwmbran
- County Hall, Dolgellau
- County Hall, Haverfordwest
- County Hall, Llandrindod Wells
- County Hall, Mold
- County Hall, Ruthin
- County of Pembroke War Memorial
- Court (Barry electoral ward)
- Court Colman Manor
- Court Farm Barn, Llanthony Priory
- Court Farmhouse, Llanover
- Court Farmhouse, Llanthony
- Court of Criminal Appeal (England and Wales)
- Courtney Keight
- Cow (public service announcement)
- Cowbois ac Injans
- Cowbridge (electoral ward)
- Cowbridge Comprehensive School
- Cowbridge Cricket Ground
- Cowbridge Food and Drink Festival
- Cowbridge Physic Garden
- Cowbridge Town Hall
- Cowbridge railway station
- Cowbridge town wall
- Coychurch
- Coygan Cave
- Craig-Cefn-Parc television relay station
- Craig-y-Don
- Craig-y-parc House
- Craig Gwrtheyrn
- Craig Thomas (author)
- Craig Ty-Isaf
- Craig y Forwyn (Conwy)
- Craig y Llyn
- Craig y Mor
- Craig yr Aderyn
- Creative Lives
- Creiddylad
- Creigiau
- Creigiau & St Fagans
- Creigiau Gleision
- Creirwy
- Cresselly Cricket Club Ground
- Cresselly House
- Cribinau
- Criccieth
- Criccieth railway station
- Crichel Down affair
- Crick, Monmouthshire
- Crickhowell Castle
- Crickhowell Market Hall
- Criggion Radio Station
- Crime Survey for England and Wales
- Crimea Pass
- Crinow
- Cristin verch Goronwy
- Croes-goch
- Croes Newydd
- Croes Robert Wood
- Croeserw
- Croesor Tramway
- Croesyceiliog
- Croesyceiliog School
- Croft-Y-Bwla
- Croft Farm Barn, Llantilio Crossenny
- Cross-border derby
- Cross Britain Way
- Cross at Croes Llwyd Farm
- Crosskeys
- Crosskeys railway station
- Crossways Halt railway station
- Crosswell
- Crow Rock
- Crown green bowls
- Crug Mawr
- Crugybar
- Crumlin, Caerphilly
- Crundale, Pembrokeshire
- Crunwere
- Crymlyn Bog
- Crymlyn Burrows
- Crymmych Arms railway station
- Crynant
- Crys
- Crûg Farm Quarry
- Cuffern Manor, Pembrokeshire
- Cuisine of Ceredigion
- Culhwch
- Culhwch and Olwen
- Culverhouse Cross
- Curig
- Curriculum and Assessment (Wales) Act 2021
- Curtis Hutson (footballer)
- Cuthbert Taylor
- Cwm, Blaenau Gwent
- Cwm-y-glo
- Cwm-yr-Eglwys
- Cwm Bwchel Farmhouse, Llanthony
- Cwm Cadnant
- Cwm Clydach, Rhondda Cynon Taf
- Cwm Dyli
- Cwm Ebol quarry
- Cwm Gwaun
- Cwm Hengae
- Cwm Prysor Viaduct
- Cwm Twrch
- Cwm railway station
- Cwmafan
- Cwmaman
- Cwmamman
- Cwmbran bus station
- Cwmbran railway station
- Cwmbran railway station (Great Western Railway)
- Cwmbwrla
- Cwmcarn
- Cwmcarn High School
- Cwmcych
- Cwmdare
- Cwmdu, Powys
- Cwmerfyn
- Cwmfelin Mynach
- Cwmgors
- Cwmgors transmitting station
- Cwmgwili
- Cwmifor
- Cwmmawr railway station
- Cwmorthin Tramway
- Cwmparc
- Cwmpengraig
- Cwmtillery
- Cwmtwrch
- Cwmyoy
- Cwmystwyth Mines
- Cwrt Sart Comprehensive School
- Cwrt y Brychan barn, stable and granary
- Cwt y Bugail quarry
- Cwtch
- Cwyllog
- Cyfarthfa High School
- Cyfeiliog
- Cylch-y-Garn
- Cyllin
- Cymanfa Ganu
- Cymer Afan Comprehensive School
- Cymerau quarry
- Cymidei Cymeinfoll
- Cymru Goch
- Cymru North
- Cymru Terrane
- Cynan Dindaethwy
- Cynan Garwyn
- Cynan ab Iago
- Cyncoed
- Cyngar of Llangefni
- Cynghanedd
- Cynidr
- Cynon ap Clydno
- Cynwyl Elfed transmitting station
- Cyril Fox
- Cyril Sidlow
- Cyrniau Nod
- Cysgod Rhyfel
- Côr Meibion Pontypridd
- Côr Tewdws
- Cŵn Annwn
- Dafydd Gam
- Dafydd Hughes
- Dafydd Huws
- Dafydd Jenkins (legal scholar)
- Dafydd Llywelyn
- Dafydd Nicolas
- Dafydd Rowlands
- Dafydd Trystan Davies
- Dafydd ab Owain Gwynedd
- Dafydd ap Dafydd ap Llywelyn
- Dafydd ap Gwilym Society
- Dai Davies (journalist)
- Dai Davies (politician)
- Dai Dower
- Dai Havard
- Dai Jones
- Dai St. John
- Dai Thomas (footballer, born 1975)
- Dai Woodham
- Dale, Pembrokeshire
- Dale Castle
- Dale Marshall (painter)
- Dale McIntosh
- Damian Green
- Dan John
- Dan Lewis (footballer)
- Dan Rees (rugby)
- Dan yr Ogof
- Danescourt
- Dani Rowe
- Daniel Barden (footballer)
- Daniel Chandler
- Daniel Davies (preacher)
- Daniel Grey
- Daniel James (footballer)
- Daniel Jones (composer)
- Daniel Morden
- Daniel Protheroe
- Daniel Silvan Evans
- Daniel Williams (footballer, born 2001)
- Daniel Williams (theologian)
- Dannie Abse
- Danny Ansell
- Danny Canning
- Danny Collins (footballer)
- Danny Williams (footballer, born 1979)
- Dare Valley Country Park
- Darklands (film)
- Daronwy Isaac
- Darran Harris
- Darran Rowbotham
- Darran and Deri railway station
- Darranlas
- Darren Jones (footballer)
- Darren Tinson
- Dave Griffiths (boxer)
- Dave Richards (footballer, born 1993)
- David Adams (Congregationalist divine)
- David Alexander (singer)
- David Anthony (wheelchair rugby)
- David Bell (artist)
- David Beynon (teacher)
- David Bower
- David Brazell
- David Cecil (courtier)
- David Charles (hymn-writer)
- David Constable (artist)
- David Cornell
- David Crouch (historian)
- David Daniel (rugby union)
- David Davies (Dai'r Cantwr)
- David Davies (Welsh actor)
- David Davies (dairyman)
- David Davies (industrialist)
- David Davis, Blaengwawr
- David Eirwyn Morgan
- David Ellis (priest)
- David Elwyn Jones
- David Evan Jones (missionary)
- David Evans (archivist)
- David Evans (canon at St Asaph)
- David Evans (department store)
- David Ffrangcon-Davies
- David G. Watts
- David Griffiths (portrait painter)
- David Hughes (Eos Iâl)
- David Hughes (priest)
- David Jenkins (composer)
- David Jenkins (librarian)
- David John (Mormon)
- David Jones (Clwyd West MP)
- David Jones (Dean of Llandaff)
- David Jones (Llangan)
- David Jones (darts player)
- David Jones (rugby, born 1881)
- David Lewis (Anglican priest, born 1760)
- David Lewis (archdeacon of Carmarthen)
- David Lewis (lawyer)
- David Lewis (poet)
- David Lewis (priest, born 1814)
- David Llewellin
- David Llewellyn (author)
- David Lloyd (Dean of St Asaph)
- David Lloyd (cricketer, born 1992)
- David Lloyd (judge)
- David Lloyd (priest)
- David Lloyd Davies
- David Miall Edwards
- David Morgan (department store)
- David Morgan (trade unionist)
- David Morris & Sons
- David Morris (bishop)
- David Nott
- David Owen Morgan
- David Petersen (sculptor)
- David Powel
- David Price (Welsh Independent minister)
- David Prosser (bishop)
- David Pugh (British politician)
- David Randell
- David Rocyn-Jones
- David Rowland (translator)
- David Rowlands (Dewi Môn)
- David Rowlands (politician)
- David Samwell
- David Tegfan Davies
- David Thomas (British politician)
- David Thomas (archdeacon of Montgomery)
- David Thomas (jeweller)
- David Thomas (missionary priest)
- David Thomas Gwynne-Vaughan
- David Thomas Jones (administrator)
- David Thomson (footballer, born 1847)
- David Vaughan (architect)
- David Wilbourne
- David William Evans
- David Williams (Liberal politician)
- David Williams (crime writer)
- David Williams (philosopher)
- David Williams (pirate)
- Davis (surname)
- Dawn Bowden
- Day Trip to Bangor (Didn't We Have a Lovely Time)
- Dduallt railway station
- De Barry family
- De Lundin
- Deanery of Cedewain
- Deceangli
- Declan Smith
- Deddie Davies
- Dee Estuary
- Deeside College
- Deeside Community Hospital
- Defensible Barracks, Pembroke Dock
- Defynnog
- Defynnog Yew
- Deganwy railway station
- Deiniol (electoral ward)
- Deiniolen
- Deirdre Hine
- Della Jones
- Delme Bryn-Jones
- Delyth Jewell
- Demetae
- Denbigh Castle and town walls
- Denbigh Cockpit
- Denbigh Community Hospital
- Denbigh Friary
- Denbigh Moors
- Denbigh Town F.C.
- Denbigh Town Hall
- Denbighshire Coalfield
- Denbighshire Constabulary
- Denise Idris Jones
- Dennis Avoth
- Dennis Powell (boxer)
- Denny Island
- Derec Llwyd Morgan
- Derek Bevan
- Derek Hodgson (trade unionist)
- Derek Jones (civil servant)
- Derek Tapscott
- Derek Vaughan
- Derrero
- Derry Ormond Tower
- Derwyddon Dr Gonzo
- Deryn Rees-Jones
- Desecration (band)
- Desert of Wales
- Desperate Poaching Affray
- Deuddwr
- Devauden
- Devil's Appendix
- Devil's Bridge
- Devil's Bridge railway station
- Dewi-Prys Thomas
- Dewi "Pws" Morris
- Dewi Emrys
- Dewi Llwyd
- Dewi Meirion Lewis
- Dewi Penrhyn Jones
- Dewisland
- Dewstow House
- Diana, Our Mother: Her Life and Legacy
- Diana (locomotive)
- Diana Morgan (screenwriter)
- Dibleys Nurseries
- Dic Edwards
- Dic Siôn Dafydd
- Dick Lewis (politician)
- Dick Power
- Dilys Glynne Jones
- Din Dryfol
- Din Lligwy
- Dinas Cross
- Dinas Dinlle
- Dinas Island
- Dinas Powys (electoral ward)
- Dinas Powys railway station
- Dinas railway station
- Dinefwr Sharks
- Dingad of Llandingat
- Dingestow
- Dingle Road railway station
- Dinorwic Railway
- Dinorwic quarry
- Diocese of Bangor
- Diphwys Casson quarry
- Director of Public Prosecutions (England and Wales)
- Disappearance of Trevaline Evans
- Diverse Vinyl
- Divorce in England and Wales
- Dixton
- Do Lectures
- Dog Stone, Mynydd Varteg
- Dolbadarn Castle (Turner)
- Doldowlod railway station
- Dolforgan Hall
- Dolgarrog railway station
- Dolgellau Deanery
- Dolgellau and Barmouth Hospital
- Dolgellau transmitting station
- Dolgoch (locomotive)
- Dolwyddelan
- Dolygaer railway station
- Domenick Davies
- Don Dearson
- Don Skene
- Donald Braithwaite
- Donald Evans (Welsh poet)
- Donald Houston
- Dormarch
- Dorothea quarry
- Dorothy Simpson
- Dorothy Squires
- Douglas (locomotive)
- Douglas Chamberlain
- Douglas Gowan
- Dovey Junction railway station
- Downing Hall
- Dragon's Heart Hospital
- Dragon Park
- Dragon Ride Wales
- Drainage district
- Drefach Group
- Drew Sherman
- Dripping cake
- Driscoll and Rowlands
- Drostre Bank
- Drovers' road
- Drybridge (Monmouth ward)
- Drybridge House, Monmouth
- Duane Jones (snooker player)
- Duke of Beaufort
- Dulas Bay
- Dulas Bridge
- Dungleddy
- Dunraven Castle
- Dunvant
- Dunvant Male Choir
- Dwynwen
- Dyddgu Hywel
- Dyfan
- Dyffryn, Vale of Glamorgan
- Dyffryn Ardudwy
- Dyffryn Clydach
- Dyffryn School
- Dyfi Bridge
- Dyfi Estuary Mudflats
- Dyfi Osprey Project
- Dyfi Valley Way
- Dyfnant Forest
- Dyfnwal Moelmud
- Dyfodwg
- Dylan Thomas Prize
- Dylife
- Dylife Gorge
- Dyne Steel Incline
- Dynea Halt railway station
- Dynevor School, Swansea
- Dyserth
- Dyserth branch line
- Dŵr Cymru Welsh Water
- E. G. Bowen
- E. Gwyndaf Evans
- Eagles Meadow
- Earl Cawdor
- Earl Stanhope
- Earl of Plymouth
- Earl of Powis
- Early modern period in Wales
- East Carmarthenshire (UK Parliament constituency)
- East Glamorganshire (UK Parliament constituency)
- East Williamston
- Eastbrook railway station
- Eastington Manor Tower
- Ebbw Vale (High Level) railway station
- Ebbw Vale (Low Level) railway station
- Ebbw Vale (UK Parliament constituency)
- Ebbw Vale Parkway railway station
- Ebbw Vale RFC
- Ebbw Vale Town railway station
- Ebbw Vale bus station
- Ebeneser Chapel, Ammanford
- Ebenezer Baptist Chapel, Llandovery
- Ebenezer Chapel, Aberavon
- Ebenezer Chapel, Llanelli
- Ebenezer Chapel, Trecynon
- Ectogram
- Ed Shervington
- Eddie Beach
- Eddie Dennis
- Eddie James (rugby union)
- Eddie Ladd
- Eddie Niedzwiecki
- Edern ap Nudd
- Edgar Evans (tenor)
- Edgar Jones (politician)
- Edgar Phillips
- Edgar Thomas (footballer)
- Edith Parnell
- Edith of Mercia
- Edmund Meyrick
- Edmund Meyricke (MP)
- Edmund Swetenham
- Edmund de Bromfield
- Educating Cardiff
- Education and Learning Wales
- Edward Barnes (poet and translator)
- Edward Barnwell
- Edward Davies Memorial Chemistry Laboratories
- Edward Edwards (priest, died 1783)
- Edward Edwards (zoologist)
- Edward Ernest Hughes
- Edward Foulkes
- Edward Greenly
- Edward H. Dafis
- Edward Haycock Sr.
- Edward Hughes (poet)
- Edward James (priest)
- Edward John Hutchins
- Edward Jones (Methodist preacher)
- Edward Jones (bishop)
- Edward M. Lewis
- Edward Matthews (author)
- Edward Millward
- Edward Morgan (priest)
- Edward Naylor-Leyland
- Edward Owen (translator)
- Edward Pegge
- Edward Phillips (cricketer, born 1883)
- Edward Pierce (priest)
- Edward Richard
- Edward Roderick Davies
- Edward Samuel
- Edward Stephen
- Edward Thomas (locomotive)
- Edward Vaughan (bishop)
- Edward Vaughan (died 1683)
- Edward Willes (bishop)
- Edward Williamson
- Edward Wynne (chancellor)
- Edwin Cross
- Edwin Hughes (soldier)
- Edwin Octavius Tregelles
- Edwin Regan
- Edwin Rowlands
- Edwin Thomas Maynard
- Edwyn Cynrig Roberts
- Efail Fach television relay station
- Eglwys Brewis
- Eglwys Nunydd
- Eglwysbach
- Eglwyseg
- Eglwysilan
- Eglwyswen
- Eglwyswrw
- Ehud Rogers
- Eifion Evans (church historian)
- Eifionydd
- Eight-Arch Bridge
- Eigiau Tramway
- Eigra Lewis Roberts
- Einion Frenin
- Einion ab Anarawd
- Einion ab Owain
- Einion ap Collwyn
- Einir Dafydd
- Eira Friesen
- Eirian Llwyd
- El Jones
- El Sieco's
- Eleanor Daniels
- Eleanor de Braose
- Elementary school (England and Wales)
- Elen Evans
- Elen Gwdman
- Elen ferch Llywelyn
- Elena Puw Morgan
- Elenydd
- Elephant and Castle, Wrexham
- Eleri Morgan (comedian)
- Eleri Rees
- Elevate your sole
- Elfael
- Elfodd
- Elfyn Evans
- Elfyn Lewis
- Elian (Welsh saint)
- Elias Sydall
- Elidir Fawr
- Eliezer Williams
- Elim Chapel, Cwmdare
- Elim Independent Chapel, Carmarthen
- Elin Williams
- Elinor Snowsill
- Elisabeth Bennett
- Elisabeth Inglis-Jones
- Elisabeth Whittle
- Elise Hughes
- Elisedd ap Cyngen
- Elisedd ap Gwylog
- Elizabeth Baker (diarist)
- Elizabeth Ferrers
- Elizabeth Haywood
- Elizabeth Mortimer
- Elizabeth Phillips Hughes
- Elizabeth Treasure
- Elizabeth Watkin-Jones
- Elizabeth Watkin Jones
- Ellen Evans
- Ellen Hughes
- Elli (electoral ward)
- Elli Norkett
- Ellis Evans
- Ellis Owen
- Ellis Owen Ellis
- Ellis Pierce
- Ellis Price
- Eluned Parrott
- Elvet Jones
- Elvey MacDonald
- Elway Bevin
- Ely Hospital
- Ely Main Line railway station
- Ely Racecourse
- Elynor Bäckstedt
- Emergency planning in Wales
- Emily Allen
- Emily Hollinshead
- Emily Huws
- Emily Stone (writer)
- Emlyn
- Emma Jenkins
- Emma Manners, Duchess of Rutland
- Emma Wools
- Emrys Evans
- Emrys Jones (geographer)
- Emrys Thomas
- Emyr Humphreys
- Energlyn & Churchill Park railway station
- England (1813 ship)
- English Baptist Church, Abercarn
- English Baptist Church, Carmarthen
- English Congregational Church, Carmarthen
- English and Australian Copper Company
- English and Welsh
- English and Welsh bastardy laws
- Englyn
- Enoch Morrell
- Enoch Salisbury
- Environment Centre (Swansea)
- Epistolae Ho-Elianae
- Equally Cursed and Blessed
- Erasmus Jones
- Erasmus Lewes
- Erasmus Saunders (priest, died 1724)
- Erfyl
- Eric James Watson
- Eric Jones (climber)
- Eriviat Hall
- Ernest Salter Davies
- Ernest William Jones
- Ernest Willows
- Ernest Zobole
- Ernie Carless
- Ernie Jenkins
- Erwood railway station
- Erwood transmitting station
- Eryl Davies
- Eryrys
- Esclusham
- Esgair Moel
- Esme Lewis
- Essential Skills Wales
- Esso Refinery, Milford Haven
- Estrons
- Estyn
- Estyn Griffiths
- Ethel Lina White
- Ether (band)
- Etymology of Wales
- Eubule Thelwall (politician)
- Eufydd fab Dôn
- Eunice Stallard
- Eurig Wyn
- Euros Bowen
- Evan Davies (Myfyr Morganwg)
- Evan Herber Evans
- Evan James Williams
- Evan Lewis (priest)
- Evan Lloyd (poet)
- Evan Lloyd (rugby union, born 2001)
- Evan Lloyd Vaughan
- Evan Mathew Richards
- Evan Morgan, 2nd Viscount Tredegar
- Evan Seys
- Evan Shelby
- Evan Thomas (inventor)
- Evan Thomas Davies (cleric)
- Evan Thomas Davies (musician)
- Evan W. Evans
- Evan Walters
- Evangelical Presbyterian Church in England and Wales
- Ewan Davies
- Ewart Jones
- Ewenny Pottery
- Ewenny Priory House
- Ewenny River
- Ewenny and Pant Quarries
- Ewloe
- Ewyas
- Express Motors
- Eynon Evans
- Eynon Hawkins
- F. Gwendolen Rees
- FC United of Wrexham
- Fade Files
- Faenol Festival
- Fairbourne
- Fairbourne Spit
- Fairwater, Cardiff
- Fairwater, Torfaen
- Fairwood Hospital
- Fairy Falls, Trefriw
- Falcondale House
- Fan Brycheiniog
- Fan Bwlch Chwyth
- Fan Fraith
- Fan Hir
- Fan y Big
- Fanny Winifred Edwards
- Fastnet Line
- Fatal Accidents Act 1846
- Fauna of Wales
- Fay Ray (band)
- February–March 2024 Welsh Labour leadership election
- Felin Fach railway station
- Felindre
- Felindre Farchog
- Felindyffryn Halt railway station
- Felinfoel
- Ferndale Colliery
- Ferryside
- Ferryside television relay station
- Ffairfach
- Ffaldybrenin
- Fferm
- Ffestiniog Memorial Hospital
- Ffestiniog transmitting station
- Ffion Bowen
- Ffion Hague
- Fflach
- Fflur Dafydd
- Fforest Fawr
- Fforest Fawr Geopark
- Fforestfach
- Ffos-y-fran Land Reclamation Scheme
- Ffos Las
- Ffridd Faldwyn, Montgomery
- Ffrith Beach
- Ffynnon Llugwy
- Ffynnon Sara
- Ffynone House
- Fiddler's Elbow National Nature Reserve
- Fifteen Tribes of Wales
- Fin Stevens
- Fionn McLoughlin
- Fire authority
- Fireman Sam: The Great Fire of Pontypandy
- Fireman Sam in Action
- First Drakeford government
- Fish Legal
- Fishguard & Goodwick Marina
- Fishguard Harbour railway station
- Fishguard Town Hall
- Fishguard Volcanic Group
- Fishguard and Goodwick
- Fishguard and Goodwick railway station
- Fitzalan High School
- Flag of Anglesey
- Flag of Ceredigion
- Flag of Merionethshire
- Flag of the Church in Wales
- Flash Morgan Webster
- Flemingston
- Flint Town Hall
- Flint railway station
- Flintshire Bridge
- Flintshire Falcons
- Flora Forster
- Florence Booth
- Florence Williams (rugby union)
- Florrie Evans
- Floyd Havard
- Fochriw
- Foel-fras
- Foel Chwern
- Foel Drygarn
- Foel Fraith
- Foel y Geifr
- Folly Farm Adventure Park and Zoo
- Folly Tower, Pontypool
- Fonmon
- Food Hygiene Rating (Wales) Act 2013
- For Tinkerbell
- Ford Bridgend Engine Plant
- Forden
- Forden Gaer
- Forge Row, Cwmavon
- Forge Side
- Fort Hubberstone
- Forté Project
- Forward Wales
- Foryd railway station
- Four Crosses, Llanfair Caereinion
- Foxhunter
- Frampton, Vale of Glamorgan
- Frances Bunsen
- Frances Donovan
- Frances Hughes
- Francesco Serafino
- Francis Davies (bishop)
- Francis Evelyn
- Francis Jones (historian)
- Francis Mostyn (archbishop of Cardiff)
- Frank Curtis
- Frank Goodden
- Frank Hancock
- Frank Hoddinott
- Frank Howel Evans
- Frank Moody
- Frank Shayler
- Fred Evans (boxer)
- Fred Mathias
- Fred Roberts (RAF officer)
- Fred Warren
- Freddie Issaka
- Frederick Higginson
- Frederick John Alban
- Frederick Lewis Davis
- FreeBMD
- Free Borough of Llanrwst
- Free b
- Freshwater East
- Freystrop
- Friars School, Bangor
- Friends of Wales Caucus
- Froncysyllte
- Froncysyllte Male Voice Choir
- Fronfraith Hall
- Frongoch
- Frongoch internment camp
- Fulk Lloyd
- Fulton House, Swansea
- Funmi Oduwaiye
- Funnybones
- Future Generations Commissioner for Wales
- GO Wales
- Gabriel Powell
- Gabriele Biancheri
- Gabrielle Creevy
- Gadlys (electoral ward)
- Gadlys Chapel
- Gaer Penrhôs
- Gair Rhydd
- Gallt y Wenallt
- Game On (song)
- Ganllwyd
- Garden Village A.F.C.
- Gareth Alban Davies
- Gareth Allen
- Gareth Baber
- Gareth Bennett (politician)
- Gareth Davies (rugby union, born 1955)
- Gareth Evans (filmmaker)
- Gareth F. Williams
- Gareth Walters
- Gareth Williams (rugby union, born 1981)
- Garn-yr-erw
- Garnddyrys Forge
- Garndiffaith Viaduct
- Garth, Bridgend
- Garth Hill
- Garth Stadium
- Garth railway station (Bridgend)
- Gartheiniog quarry
- Garw/Ffaldau Colliery
- Garw S.B.G.C.
- Garw Valley
- Garw Valley Railway
- Gary Pickford-Hopkins
- Gateholm
- Gavelkind
- Gavin Rees
- Gaz Oakley
- Geirionydd Rural District
- Gele (electoral ward)
- Gelli, Pembrokeshire
- Gelli, Rhondda
- Gelli Aur country park
- Gelli Farmhouse, Llanvetherine
- Gelli Felen Halt railway station
- Gellimanwydd Chapel
- Gemma Evans (footballer)
- Gemma Frizelle
- Gemma Rowland
- Genealogies from Jesus College MS 20
- General Register Office for England and Wales
- Geoff Eales
- Geoff Ellis
- Geoff Holder
- Geoffrey Dhenin
- George Bull
- George Cadogan Morgan
- George Constantine (priest)
- George Cording
- George Edward Day
- George Fisher (dramatist)
- George Frederick Harding
- George Gould Morgan
- George Grant Francis
- George Griffith (bishop)
- George Hotel, Chepstow
- George Howells
- George Huntington (priest)
- George Irby, 6th Baron Boston
- George Jeffreys (pastor)
- George Latham (footballer)
- George Lockwood Morris
- George Lort Phillips
- George Nugent Tyrrell
- George Owen Harry
- George Prothero (cricketer)
- George Reynolds (boxer)
- George Shaw (cricketer, born 1931)
- George Stradling
- George Street Bridge, Newport
- George Thomson (footballer, born 1854)
- George Travers (rugby union)
- George Tyler (Royal Navy officer)
- Georgetown, Blaenau Gwent
- Georgia Evans (rugby union)
- Georgia Walters
- Georgia Wilson (equestrian)
- Geraint Goodwin
- Geraint Griffiths
- Geraint H. Jenkins
- Geraint Howells
- Geraint Jarman
- Geraint Stanley Jones
- Geraint Talfan Davies
- Geraint Todd
- Geraint son of Erbin
- Geraint the Blue Bard
- Gerald Jones
- Gerald Williams (tennis commentator)
- Gerald de Windsor
- Gerallt Lloyd Owen
- Gerard Cousins
- Gerwyn Price
- Geufron Hall, Llangollen
- Gian Fulgoni
- Giants (Welsh folklore)
- Gilbern
- Gilbert Basset
- Gilbert Fitz Richard
- Gilbert de Clare, 7th Earl of Gloucester
- Gileston Manor
- Gileston railway station
- Gilfach Ddu
- Gilfach Ddu railway station
- Gilfach Goch
- Gilfaethwy
- Gillian Gill
- Gilwern Halt railway station
- Gilwern Hill, Monmouthshire
- Ginger Jones
- Gipsy Daniels
- Gladstone's Library
- Gladys Morgan
- Glamorgan Archives
- Glamorgan Building
- Glamorgan County Silver Ball Trophy
- Glamorgan Wanderers RFC
- Glamorganshire (UK Parliament constituency)
- Glamorganshire Golf Club
- Glan-y-Mor Comprehensive School
- Glan Conwy railway station
- Glan Llyn
- Glan y Llyn railway station
- Glanamman (electoral ward)
- Glandwr, Pembrokeshire
- Glandyfi Castle
- Glanrhyd Hospital
- Glanusk Park
- Glasbury
- Glasbury (electoral ward)
- Glascwm
- Glaslyn Osprey Project
- Glaslyn Rural District
- Glastir
- Glen Moody
- Glen Usk, Llanhennock
- Glendower House, Monmouth
- Glewlwyd Gafaelfawr
- Gloddfa Ganol
- Glogue
- Gloucester–Newport line
- Glyder (electoral ward)
- Glyder Fach
- Glyderau
- Glyn Ceiriog
- Glyn Davidge
- Glyn Garner
- Glyn Houston
- Glyn Simon
- Glyn Valley Tramway
- Glyncorrwg
- Glyndyfrdwy
- Glyndŵr Award
- Glyndŵr House, Grosmont
- Glynllifon
- Glynllifon Street railway station
- Gnoll Country Park
- Godfrey Morgan, 1st Viscount Tredegar
- Gofannon
- Goginan
- Gold Medal (National Eisteddfod of Wales)
- Goldcliff
- Goldcliff Priory
- Golden Grove, Flintshire
- Goldsland
- Golf Halt railway station
- Goodwick (electoral ward)
- Gordon Back
- Goreu fab Custennin
- Goronwy Owen (poet)
- Gorseddau Junction and Portmadoc Railway
- Gorseddau Tramway
- Gorseinon RFC
- Gospel Pass
- Governing Body of the Church in Wales
- Govilon railway station
- Gower Ornithological Society
- Gower and Swansea Bay Coast Path
- Gower dialect
- Gowerton
- Gowerton Comprehensive School
- Gowerton railway station
- Grace Dulais Davies
- Grace Williams
- Graeme Garrard
- Graham Dixon-Lewis
- Graham Price
- Graham Williams (footballer, born 1938)
- Graianrhyd
- Graig-y-Rhacca
- Graig Wood
- Graigwen
- Grand Hotel (Llandudno)
- Grand Pavilion, Porthcawl
- Grand Union (train operating company)
- Grange Farmhouse farm buildings, Newcastle, Monmouthshire
- Grannygate
- Granston
- Grant Llewellyn
- Great Brynhill
- Great Castle House
- Great Cefnyberen
- Great House, Llanarth
- Great House, Llanover
- Great House Farm, Llangua
- Great Killough
- Great Pool Hall, Llanvetherine
- Great Porthamel Farm and Gatehouse
- Great Tresenny Farmhouse
- Great Western Cities
- Great Western Mine
- Greatest Hits Radio South Wales
- Green Bridge of Wales
- Green Gathering
- Green Man Festival
- Greenala Point
- Greenfield, Flintshire
- Greenlink
- Greg Bowen
- Greg Fitzgerald
- Greg Hill (poet)
- Greg Holmes (cricketer)
- Gregynog Hall
- Gresford
- Grey Mare's Tail, Conwy
- Griffith's Crossing railway station
- Griffith Arthur Jones
- Griffith Evans (bacteriologist)
- Griffith Hartwell Jones
- Griffith J. Griffith
- Griffith Lloyd
- Griffith Powell
- Griffith W. Griffith
- Griffithstown
- Griffithstown Railway Museum
- Groes-faen
- Groeslon railway station
- Groeswen Halt railway station
- Gronw Pebr
- Grosmont, Monmouthshire
- Grosmont Town Hall
- Grouted roof
- Grove Building
- Grove Farm House, Llanfoist
- Gruffudd Fychan II
- Gruffudd Vychan
- Gruffudd ab Owain Glyndŵr
- Gruffudd ap Llywelyn ap Iorwerth
- Gruffydd Fychan ap Iorwerth
- Gruffydd Maelor I
- Gruffydd Young
- Gruffydd ap Rhys ap Thomas
- Grwyne Fawr
- Guardian (sculpture)
- Guest family
- Guild of Our Lady of Ransom
- Guildhall, Wrexham
- Guilsfield
- Gulf Refinery, Milford Haven
- Gumfreston
- Gunter Mansion
- Gurnos
- Guto Bebb
- Guto Dafydd
- Guto Nyth Brân
- Gwaelod-y-Garth
- Gwaenynog
- Gwaith Powdwr
- Gwalchmai, Anglesey
- Gwalia United F.C.
- Gwaun-Cae-Gurwen
- Gwaunceste Hill
- Gwawl
- Gwawr Chapel
- Gwen Crabb
- Gwen ferch Ellis
- Gwenan Davies
- Gwendoline Davies
- Gwendoline Trubshaw
- Gwenfron Moss
- Gwenllian Jenkins
- Gwenllian Morgan
- Gwenlyn Parry
- Gwennan Harries
- Gwenno Teifi
- Gwenny Griffiths
- Gwent Archives
- Gwent Wildlife Trust
- Gwenwynwyn
- Gwerclas
- Gwerful Fychan
- Gwerful Mechain
- Gwern
- Gwernaffield
- Gwernydd Penbre
- Gwernydomen Halt railway station
- Gwersyllt railway station
- Gweunydd Glan-y-glasnant
- Gwgon ap Meurig
- Gwilliam Iwan Jones
- Gwilym (band)
- Gwilym Davies (minister)
- Gwilym Edwards
- Gwilym Gwent
- Gwilym Tilsley
- Gwilym ap Griffith
- Gwlad
- Gwlad y Gân
- Gwladys
- Gwladys Yvonne McKeon
- Gwladys ferch Dafydd
- Gwrfyw
- Gwrhyr Gwalstawd Ieithoedd
- Gwriad ap Elidyr
- Gwrych Castle
- Gwyddelwern
- Gwyddno Garanhir
- Gwydyr House
- Gwyllion
- Gwyn Jones (physicist)
- Gwyn Jones (rugby union)
- Gwyn Martin
- Gwyn Morgan (civil servant)
- Gwyn Thomas (novelist)
- Gwyn ap Nudd
- Gwyndaf Evans
- Gwynfe
- Gwynfryn, Wrexham
- Gwynno
- Gwyrfai Rural District
- Gyrn Castle
- H.M. Stanley Hospital
- HMS Cambria (shore establishment)
- HM Inspectorate of Probation
- HM Prison Berwyn
- HM Prison Cardiff
- HM Prison Usk
- Hadyn Ellis
- Hafina Clwyd
- Hafod
- Hafod Copperworks
- Hafod Elwy Moor National Nature Reserve
- Hafod Uchtryd
- Hafod y Llyn railway station
- Hafodyrynys
- Hafren Forest
- Hakin
- Hakin Docks railway station
- Halfway railway station
- Halghton
- Halghton Hall
- Halkyn
- Halkyn Castle
- Hall Street Methodist Church, Llanelli
- Hammerfest (festival)
- Hana Lili
- Hanan Issa
- Hanbury Arms
- Hancorne family
- Handel Greville
- Hanef Bhamjee
- Hanmer, Wrexham
- Hannah Blore
- Hannah Blythyn
- Hannah Brier
- Hannah Dingley
- Hannah Grace
- Hannah Jones (rugby union)
- Hannah Stone
- Hans Busk (1772–1862)
- Harlech Tramway
- Harleian genealogies
- Harold Arthur Harris
- Harold Thomas (rugby union, born 1883)
- Harold Williams (priest, died 1954)
- Haroldston St. Issell's
- Haroldston West
- Harpton Court
- Harri Ackerman
- Harri Pritchard-Jones
- Harrison Keddie
- Harry Adams (footballer)
- Harry Davies (socialist)
- Harry Greene (television personality)
- Harry Holland (artist)
- Harry Longueville Jones
- Hasguard
- Hate speech laws in the United Kingdom
- Hatterrall Hill
- Hatterrall Ridge
- Haverfordwest Bank
- Haverfordwest Castle (electoral ward)
- Haverfordwest Priory (electoral ward)
- Haverfordwest Rural District
- Haverfordwest Town Museum
- Haverfordwest transmitting station
- Hawarden
- Hawarden Castle (18th century)
- Hawarden High School
- Hawarden railway station
- Hawise Lestrange
- Hay-on-Wye Bridge
- Hay Railway
- Haydn Llewellyn Davies
- Hayes Island Snack Bar
- Hayscastle
- Health and Care Research Wales
- Heart North and Mid Wales
- Heart South Wales
- Heart Valley
- Heath, Cardiff
- Heath Low Level railway station
- Heather and Ivan Morison
- Hebron Chapel, Ton Pentre
- Hebron railway station
- Hedd Wyn (film)
- Hefin O'Hare
- Heinz Koppel
- Heledd Fychan
- Helen Jenkins
- Helen Mackay (sculptor)
- Helen Mary Jones
- Helen Raynor
- Helen Thomas (activist)
- Helen Ward (footballer)
- Helen Watts
- Helig ap Glanawg
- Hen-Dy-Cwrdd
- Hen Domen
- Hen Dyffryn Gwyn
- Hen Gaer
- Hen Gwrt Moated Site
- Hen Llys
- Henblas, Llanasa
- Henblas Burial Chamber
- Hendre'r-ywydd Uchaf Farmhouse
- Hendre-Ddu Tramway
- Hendrefoilan
- Hengoed
- Hengoed railway station
- Hengwrt
- Henllan
- Henllan Amgoed
- Henllan railway station
- Henrhyd Falls
- Henry's Moat
- Henry Avray Tipping
- Henry Clarence Whaite
- Henry Davies (journalist)
- Henry Edwards (priest)
- Henry Frederick, Prince of Wales
- Henry Haydn Jones
- Henry Hicks (geologist)
- Henry James (dean of Bangor)
- Henry Jones-Davies (farmer)
- Henry Jones (philosopher)
- Henry Landor
- Henry Lewis (academic)
- Henry Morgan (bishop)
- Henry Paget, 4th Marquess of Anglesey
- Henry Parry (priest)
- Henry Perry (writer)
- Henry Rees
- Henry Rowlands (bishop)
- Henry Salisbury
- Henry Somerset, 1st Marquess of Worcester
- Henry Spinetti
- Henry Tudor School
- Henry Vivian, 1st Baron Swansea
- Henry William John Edwards
- Heol Senni Quarry
- Heolyfelin Chapel
- Herbert Millingchamp Vaughan
- Herbert Price
- Herbert family
- Herbrandston
- Heritage coast
- Hermon, Pembrokeshire
- Hermon Chapel, Penrhiwceiber
- Hiag Akmakjian
- Hidden (2018 TV series)
- Hieracium radyrense
- High Court enforcement officer
- High Court judge (England and Wales)
- High Glanau
- High Hopes (British TV series)
- High House, Penrhos, Monmouthshire
- Higher Education Funding Council for Wales
- Higher Kinnerton
- Hightown, Wrexham
- Hightown Barracks
- Hijinx Theatre
- Hill's Tramroad
- Hill Mountain
- Hirfynydd
- Hirwaun railway station
- History of Cardiff City F.C.
- History of rugby union matches between Argentina and Wales
- History of rugby union matches between Scotland and Wales
- History of the Wales national rugby union team (2004–present)
- Hodgeston
- Hodgeston Parish Church
- Hogia'r Wyddfa
- Holiday on the Buses
- Holy Cross Church, Port Talbot
- Holy Trinity Church, Marcross
- Holy Trinity Church, Sarn
- Holyhead Breakwater
- Holyhead Breakwater Lighthouse
- Holyhead Lifeboat Station
- Holyhead Mail Pier Lighthouse
- Holyhead Maritime Museum
- Holyhead Market Hall
- Holyhead Mountain
- Holyhead Mountain Hut Circles
- Holyhead Town Council
- Holyhead Town Hall
- Holyhead transmitting station
- Holywell, Flintshire
- Holywell Community Hospital
- Holywell Town Hall
- Holywell branch line
- Honno (publisher)
- Honourable and Loyal Society of Antient Britons
- Honours of the Principality of Wales
- Hook, Pembrokeshire
- Hoover's Sports Ground
- Hope Hall
- Hope railway station (Wales)
- Hopkinstown
- Horace Cumner
- Horace Lyne
- Horeb Chapel, Llwydcoed
- Horizons Gorwelion
- Horseman's Green
- Horseshoe Falls (Wales)
- Horsley Hall, Gresford
- Horton and Port Eynon Lifeboat Station
- Houghton, Pembrokeshire
- Howard Collins
- Howard Spring
- Howard Stringer
- Howard Thomas (producer)
- Howel Gwyn
- Howel Harris Hughes
- Howell's House, Grosmont
- Howell's School, Denbigh
- Howell's School, Llandaff
- Howell Davis
- Howell Elvet Lewis
- Howell Idris
- Howell Jones Williams
- Howells (department store)
- Howick Farmhouse, Itton
- Hu Gadarn
- Hubberston
- Hubert Rhys
- Hueil mab Caw
- Hugh Beaver Roberts
- Hugh Davies (botanist)
- Hugh Evans (politician)
- Hugh Gore (bishop)
- Hugh Hughes (poet)
- Hugh Ingledew
- Hugh John Vaughan Campbell, 6th Earl Cawdor
- Hugh Johns
- Hugh Lindsay (bishop)
- Hugh Lloyd (bishop)
- Hugh Maurice
- Hugh Morriston Davies
- Hugh Owen (educator)
- Hugh Owen (minister)
- Hugh Percy Wilkins
- Hugh Roberts (politician)
- Hugh Vaughan (Governor of Jersey)
- Hugh Vincent
- Hugh Williams (historian)
- Hughes Memorial, Corris
- Humphrey Lloyd (bishop)
- Humphrey Mackworth
- Humphrey Owen Jones
- Hundleton
- Huw Morus
- Huw Owen
- Huw Richards
- Huw Thomas (Welsh politician)
- Huw Williams
- Huwal of the West Welsh
- Hwb
- Hwyl Nofio
- Hyam's Mineral Water Works
- Hygga House Dovecote, Trellech
- Hymns to the Stone
- Hywel Bennett
- Hywel Gwynfryn
- Hywel Sele
- Hywel Williams
- Hywel ap Ieuaf
- Hywel the Great
- ITV Cymru Wales
- Iago ap Beli
- Iain Rogerson
- Ian Buckett
- Ian Hillier
- Ian Johnston (police commissioner)
- Ian Parrott
- Ian Skidmore
- Ian Watson (rugby league)
- Ianto Davies
- Ida de Grey
- Idris Cox
- Idris Davies
- Idris Foster
- Idris Gawr
- Idris Hopkins
- Idris Lewis
- Idwal Foel
- Idwal Iwrch
- Iestyn George
- Ieuan Morris
- Ieuan Rees
- Ieuan ap Hywel Swrdwal
- Ieuan ap Rhydderch ab Ieuan Llwyd
- Ifor Bach
- Ifor Owen
- Ike Fowler
- Illtyd (electoral ward)
- Ilston
- Ilston Book
- Imogen Thomas
- In Parenthesis
- Inabwy
- Independent Nation: Should Wales Leave the UK?
- Infantry Battle School
- Infrastructure Planning Commission
- Ingimundr (tenth century)
- Inglis Bridge, Monmouth
- Inmos microprocessor factory
- Institute of Art and Ideas
- Institute of Biological, Environmental and Rural Sciences
- Institute of Chartered Accountants in England and Wales
- Interim Morgan administration
- Internal Fire Museum of Power
- International Convention Centre Wales
- International Film Festival of Wales
- International Open Series
- Ioan Bowen Rees
- Iolo Goch
- Iolo Williams
- Iorrie Isaacs
- Iorwerth Goch ap Maredudd
- Iorwerth Peate
- Iris Gower
- Iris Williams
- Irma Chilton
- Irreligion in Wales
- Isaac Christie-Davies
- Isaac Davis (advisor)
- Isaac Foulkes
- Isaac Jones (priest)
- Isabella Gifford
- Iscoed
- Iscoyd Park
- Island House, Laugharne
- Isle of Anglesey electoral boundary changes 2012
- Islwyn Borough Transport
- Isycoed
- Itton
- Itton Court
- Ivor Barry
- Ivor Davies (rugby union, born 1892)
- Ivor Gregory
- Ivor Guest, 1st Baron Wimborne
- Ivor Roberts-Jones
- Iwan Bala
- J. Dunn & Co., Tenby
- J. G. Parry-Thomas
- J. Glyn Davies
- J. Gwyn Griffiths
- J. S. Pughe
- J. Vyrnwy Morgan
- J W Poundley and D Walker
- Jack Harris (singer-songwriter)
- Jack Hurrell
- Jack Jones (rugby union, born 1886)
- Jack Marshman
- Jack Mary Ann
- Jack Perrett
- Jack Petersen (boxer)
- Jack Sargeant (politician)
- Jack Shore
- Jack Sound
- Jack Williams (rugby union)
- Jack o' Kent
- Jack to a King
- Jackie Jones
- Jacob Youde William Lloyd
- Jak Jones
- Jake Charles
- Jake Taylor (footballer, born 1991)
- Jakokoyak
- Jamal Easter
- James Ashwell
- James Bevan
- James Conway Davies
- James Davis (satirist)
- James Edmund Vincent
- James Eirian Davies
- James Fynn
- James Goronwy Mathias
- James Harrison (British Army officer)
- James Howell
- James Loveridge
- James Madison Carpenter
- James Perrot
- James Philipps
- James Price (of Monachty)
- James Roberts (British athlete)
- James Stephens (trade unionist)
- James Waite (footballer, born 1999)
- James Whitley (archaeologist)
- James Williams (priest, died 1872)
- Jameston
- Jamie Lucas
- Jamie Reed (footballer)
- Jamie Wallis
- Jane Aaron (educator)
- Jane Brereton
- Jane Cave
- Jane Helen Rowlands
- Jane Hughes (poet)
- Jane Williams (Ysgafell)
- Janet Haworth
- Janet Henderson
- Janet Price
- Jasmine Joyce-Butchers
- Jason Brown (footballer)
- Jason Cook (boxer)
- Jason Mohammad
- Jason Rees
- Jay Simon
- Jayne Bryant
- Jayne Ludlow
- Jazmin Carlin
- Jean-François Le Gonidec
- Jeffrey Cuthbert
- Jeffrey Weeks (sociologist)
- Jeffreyston
- Jehdeiah Bowen
- Jehoida Hodges
- Jemima Phillips
- Jemma Lowe
- Jennie Eirian Davies
- Jennifer Sullivan (writer)
- Jenny James (swimmer)
- Jenny McLoughlin
- Jenny Ogwen
- Jenny Randerson, Baroness Randerson
- Jenny Willott
- Jeremiah Azu
- Jeremy Huw Williams
- Jerry Hunter
- Jerry the Tyke
- Jerusalem Chapel, Bethesda
- Jerusalem Chapel, Penrhiwceiber
- Jerusalem Chapel, Ynysybwl
- Jess Taylor-Roberts
- Jessica Garlick
- Jessica Roberts
- Jessie Ace and Margaret Wright
- Jillian Lane
- Jim Burns
- Jim Lang (rugby union)
- Jim Pressdee
- Jimmy Austin
- Jimmy Jewell (climber)
- Jo Price
- Jo Stevens
- Joan Williams (artist)
- Joanna Gruesome
- Jocelyn Burton
- Joe Cordina
- Joe Dunthorne
- Joe Erskine (Welsh boxer)
- Joe Johns (boxer)
- Joe Low
- Joe Westwood
- Joel Colwill
- Joel Makin
- Joey Jones
- John Ballinger (librarian)
- John Barnie
- John Bassett (died 1551)
- John Beard (artist)
- John Beddoes School
- John Bevan (rugby union)
- John Bryan Evans
- John Bryn Edwards
- John Callis (pirate)
- John Campbell, 1st Earl Cawdor
- John Campbell, 2nd Earl Cawdor
- John Campbell of Cawdor
- John Cledwyn Davies
- John Collins (footballer, born 1949)
- John David (musician)
- John David Davies
- John David Jenkins
- John Davidson (cricketer, born 1964)
- John Davies (Congregationalist minister, born 1804)
- John Davies (Mallwyd)
- John Davies (Unitarian minister, born 1795)
- John Davies (bard)
- John Davies (bibliographer and genealogist)
- John Davies (priest, born 1795)
- John Davies (translator)
- John Davies of Nercwys
- John Derrick (cricketer)
- John Dyer
- John Dyfnallt Owen
- John Edward Daniel
- John Edward Jones (governor)
- John Edwards (Siôn Treredyn)
- John Edwards (hymnist)
- John Eldon Bankes
- John Ellis (religious writer)
- John Ellis Williams
- John Evans (1702–1782)
- John Evans (pirate)
- John Evans (surgeon)
- John Evans (topographical writer)
- John Fitzalan (died 1240)
- John Frost School
- John Frost Square
- John Gibson (editor and journalist)
- John Gibson (sculptor)
- John Glynne (judge)
- John Griffith (journalist)
- John Griffiths (Welsh politician)
- John Griffiths (curator)
- John Griffiths (mathematician)
- John Gwenogvryn Evans
- John Hanmer (bishop)
- John Hardy (composer)
- John Henry Evans
- John Henry Salter
- John Henry Vivian
- John Herbert (Secretary of State)
- John Hugh Jones
- John Hughes (1873–1932)
- John Hughes (antiquary)
- John Hughes (businessman)
- John Hughes (minister, 1796–1860)
- John Hughes (priest, 1787–1860)
- John Iltyd Nicholl
- John Islan Jones
- John Jeffery (rugby union)
- John Jenkins (Ifor Ceri)
- John Jenkins (Welsh politician)
- John Jenkinson (bishop)
- John Jones (16th-century physician)
- John Jones (Benedictine)
- John Jones (Coch Bach y Bala)
- John Jones (Jac Glan-y-gors)
- John Jones (archdeacon of Merioneth)
- John Jones (footballer, born 1856)
- John Jones (literary patron)
- John Jones (physician, died 1709)
- John Lansdown
- John Laviers Wheatley
- John Lewis (Radnor MP)
- John Lewis (of Abernant)
- John Lloyd-Jones
- John Lloyd (Cardiganshire)
- John Lloyd (judge)
- John Lloyd (rector of Caerwys)
- John Lloyd Davies
- John Lloyd Thomas
- John Lysaght and Co.
- John Marek
- John McGrath (artistic director)
- John Morgan (poet)
- John Morgan Lloyd
- John Morris-Jones
- John Nicholls (controversialist)
- John Owen (Owain Alaw)
- John Owen (bishop of St Asaph)
- John Owen (chancellor of Bangor)
- John Owen (epigrammatist)
- John Parry (Mormon)
- John Parry (harpist)
- John Penry
- John Pettingall
- John Petts (artist)
- John Powell (judge)
- John Price (footballer, born 1854)
- John Price (librarian)
- John Price Davies
- John Prise
- John Pugh (of Mathafarn)
- John Rawlins (rugby union)
- John Rea (footballer)
- John Rice Jones
- John Roberts, 1st Baron Clwyd
- John Roberts (Presbyterian)
- John Roberts (footballer, born 1946)
- John Roberts (missionary)
- John Roland Phillips
- John Romilly Allen
- John Rowlands (Giraldus)
- John Scourfield
- John Stevens (Wisconsin inventor)
- John Stone (curler)
- John Strand-Jones
- John T. Koch
- John T. Lewis
- John Treasure
- John Vaughan, 1st Earl of Carbery
- John Vaughan, 1st Viscount Lisburne
- John Vaughan (chief justice)
- John Vivian, 4th Baron Swansea
- John Vivian (1750–1826)
- John W. Thomas (Wisconsin politician)
- John Whitlock Nicholl Carne
- John William Duncan
- John William Evans (Welsh politician)
- John Williams (barrister)
- John Williams (minister and physician)
- John Wogan (MP died 1557)
- John Wogan (MP died 1580)
- John Woodcock (police officer)
- John Wynne (bishop)
- John Wynne (industrialist)
- John ac Alun
- John of Thoresby
- Johnnie Morgan
- Johnny Houlston
- Johnny Morris (television presenter)
- Johnstown and Hafod railway station
- Joint Service Mountain Training Centre
- Jon Worth
- Jonah Jones (sculptor)
- Jonathan Adams (architect)
- Jonathan Brown (Welsh footballer)
- Jonathan Davies (cricketer, born 1980)
- Jonathan Edwards (Welsh politician)
- Jonathan Edwards (poet)
- Jonathan Edwards (priest)
- Jonathan Phillips (ice hockey)
- Jonathan Shipley
- Jones' Village Bakery
- Jones of Hendwr
- Jonny Williams
- Jordan Davies (footballer)
- Jordanston Halt railway station
- Joseph Bradney
- Joseph Davies (priest)
- Joseph Parry's Cottage
- Josh Adams (rugby union)
- Josh Hathaway
- Josh Helps
- Josh Wardle
- Joshua Jones (TV series)
- Joshua Parry
- Joshua Thomas
- Josiah D. Hicks
- Josiah Rees
- Jude Rogers
- Judgement Day (rugby union)
- Judges' Lodgings, Monmouth
- Julian Cayo-Evans
- Julie Morgan
- July 2024 Welsh Labour leadership election
- Junior Tour of Wales
- Justiciar of South Wales
- Kai Owen
- Kale (Welsh Roma)
- Kamal Ali
- Kara Chesworth
- Karen Davies
- Karen Holford
- Karl Jones
- Kate McGill
- Katherine Grant, 12th Countess of Dysart
- Kathleen Lloyd Jones
- Katie Prankerd
- Katrina Jacks
- Kay Morley-Brown
- Kayleigh Powell
- Kayne McLaggon
- Keeping Faith (TV series)
- Keira Bevan
- Keith Best
- Keith Bradshaw (rugby union)
- Keith Kissack
- Keith Lloyd
- Keith Robbins
- Kelly Lee Owens
- Kelly Morgan
- Kelsey Jones (rugby union)
- Kelvin Smart
- Kemeys Commander
- Kemeys Manor
- Ken Leek
- Kendrick's Cave
- Kendrick's Cave Decorated Horse Jaw
- Kenfig
- Kenfig Castle
- Kenfig Hill
- Kenfig Pool
- Kennixton Farmhouse
- Kenyon Jones
- Kerry, Powys
- Kerry Hill sheep
- Kerry Morgan
- Kerry Peers
- Kevin Lloyd (footballer, born 1970)
- Kevin Moseley
- Kevin Sheedy (Irish footballer)
- Kiban Rai
- Kidwell-e Festival
- Kidwelly Priory
- Kidwelly Town Council
- Kidwelly Town Hall
- Kidwelly sex cult
- Kieran Evans
- Kieron Davies
- Kieron Evans
- Kieron Freeman
- Kilgetty
- Kilgetty/Begelly
- Kilgwrrwg
- Killay, Swansea
- Killing of Ruth Williams
- Kilsby Jones
- Kilvey Community Woodland
- Kilvey Hill
- Kilvey Hill transmitting station
- Kim Howells
- Kimberley Nixon
- King's Quoit
- King Camber
- King Henry VIII Grammar School
- King Square, Barry
- Kingsbridge, Swansea
- Kington and Eardisley Railway
- Kinmel Hall
- Kinmel Park Training Area
- Kinmel Park mutiny
- Kirsty Williams
- Kittle, Swansea
- Knighton Community Centre
- Knighton Hospital
- Knights of the Royal Oak
- Knucklas
- Knucklas railway station
- Kusha Petts
- Kyle Letheren
- Kyron Duke
- LC, Swansea
- LV 91
- Labour for an Independent Wales
- Lady Park Wood National Nature Reserve
- Lake Vyrnwy Half Marathon
- Lambrocus Thomas
- Lampeter Castle
- Lampeter Town Hall
- Lampeter Town RFC
- Lampeter Velfrey
- Lampeter railway station
- Lamphey
- Lamphey Bishop's Palace
- Land Authority for Wales
- Land Transaction Tax
- Land use in Wales
- Landfill Disposals Tax
- Landimore
- Landore
- Landore High Level railway station
- Landore Viaduct
- Langland Bay Golf Club
- Languages of Wales
- Lansbury Park
- Lansdowne Primary School
- Larkfield (electoral ward)
- Lateysha Grace
- Latin Mass Society of England and Wales
- Laugharne Town Hall
- Laugharne Township (electoral ward)
- Laura Deas
- Laura Evans-Williams
- Laura Halford
- Laura O'Sullivan
- Lauren Harries
- Lauren Parfitt
- Lauren Price
- Laurence Womock
- Lavan Sands
- Lavernock Battery
- Lavernock railway station
- Law Society of England and Wales
- Lawrenny
- Le Pub
- Learned Society of Wales
- Leckwith development
- Lee Nogan
- Lee Selby
- Lee Thomas (rugby union)
- Leekes
- Legal Services Complaints Commissioner
- Legal Services Ombudsman
- Legislative consent motion
- Leighton Samuel
- Len Newcombe
- Leo Newton
- Leon Atkin
- Leon Pownall
- Leonora Brito
- Leslie Bonnet
- Leslie Jones (footballer)
- Leslie Morris
- Leslie Thomas
- Letterston
- Levy-Dew
- Lewis Gilbertson
- Lewis Jones (writer)
- Lewis Morris (1701–1765)
- Lewis ab Owen
- Lewys Glyn Cothi
- Lexcel
- Leyland Arms, Llanelidan
- Liam Cullen
- Liam Hutchinson
- Liam Williams (rugby union)
- Libanus Chapel, Aberaman
- Lichfield Gospels
- Liddeston
- Lidmore
- Life Sciences Hub Wales
- Life imprisonment in England and Wales
- Lightship 2000
- Lillian Griffith
- Limekilns at Kiln Park, Pembrokeshire
- Limeslade Mystery
- Limpert Bay
- Linda Parker (bowls)
- Linda Vista Gardens
- Lisa Diveney
- Lisa Gwilym
- Lisa Lee Dark
- Lisa Neumann
- Lisa Power
- List of Fairbourne Railway rolling stock
- List of Llangollen Railway rolling stock
- List of stations and halts on the Vale of Rheidol Railway
- Litchard
- Little Haven
- Little Llwygy Farmhouse, Cwmyoy
- Little Newcastle
- Little Orme
- Little Pitt Cottage
- Little and Broad Haven Lifeboat Station
- Live at Treorchy
- Livox Wood
- Liz Johnson (swimmer)
- Llais Gwynedd
- Llan-ar-goll-en
- Llan-dafel
- Llan Ffestiniog
- Llanafan Fawr
- Llanarmon-yn-Iâl
- Llanarmon Dyffryn Ceiriog
- Llanarmon Mynydd Mawr
- Llanbadarn Fawr, Ceredigion
- Llanbadarn Fawr, Powys
- Llanbadarn Fawr Community Council
- Llanbedr
- Llanbedr-y-Cennin
- Llanbedr Dyffryn Clwyd
- Llanbedrog
- Llanberis Lake Railway
- Llanberis railway station (Llanberis Lake Railway)
- Llanberis railway station (Snowdon Mountain Railway)
- Llanbethery Platform railway station
- Llanbister
- Llanboidy
- Llanbradach
- Llanbrynmair
- Llancaiach railway station
- Llancarfan
- Llandaff Rowing Club
- Llandarcy
- Llanddaniel Fab
- Llandderfel railway station
- Llanddewi Court
- Llanddewi Velfrey
- Llanddoged and Maenan
- Llanddona fish weir
- Llanddulas and Rhyd-y-foel
- Llanddyfnan
- Llandegfan
- Llandegfedd Reservoir
- Llandegla
- Llandegley International Airport
- Llandeilo (electoral ward)
- Llandeilo Bridge
- Llandeilo Llwydarth
- Llandeloy
- Llandinam
- Llandinam Bridge
- Llandingat House
- Llandogo
- Llandough Castle
- Llandough Platform railway station
- Llandovery Bank
- Llandovery Castle
- Llandovery Hospital
- Llandovery RFC
- Llandovery Town Hall
- Llandow
- Llandow (Wick Road) Halt railway station
- Llandow (electoral ward)
- Llandow Halt railway station
- Llandre
- Llandrillo, Denbighshire
- Llandrillo yn Rhos
- Llandrindod East/West
- Llandrindod Wells County War Memorial Hospital
- Llandrindod Wells Deanery
- Llandrindod Wells Library
- Llandrindod Wells transmitting station
- Llandrindod railway station
- Llandrinio Bridge
- Llandudno Cable Car
- Llandudno F.C.
- Llandudno General Hospital
- Llandudno Junction railway station
- Llandudno Ladies F.C.
- Llandudno Lifeboat Station
- Llandudno Open
- Llandudno Town Hall
- Llandudno and Colwyn Bay Electric Railway
- Llandudno railway station
- Llandyfriog transmitting station
- Llandyrnog
- Llanedeyrn High School
- Llanegryn
- Llanelieu
- Llanelli (Senedd constituency)
- Llanelli (UK Parliament constituency)
- Llanelli Star
- Llanelli Town Hall
- Llanelli and Mynydd Mawr Railway
- Llanelli railway station
- Llanelli transmitting station
- Llanelly Bank
- Llanelly Tramways
- Llanerch-Ayron Halt railway station
- Llanerchrugog F.C.
- Llanerchydol
- Llanfachraeth
- Llanfaelog
- Llanfaes
- Llanfaethlu
- Llanfaglan
- Llanfair-Nant-Gwyn
- Llanfair Dyffryn Clwyd
- Llanfair Grange
- Llanfawr Quarries
- Llanfechain
- Llanfechan
- Llanfechell
- Llanferres
- Llanfihangel-ar-Arth
- Llanfihangel-yng-Ngwynfa
- Llanfihangel (Powys electoral ward)
- Llanfihangel Penbedw
- Llanfihangel Talyllyn
- Llanfihangel y Creuddyn
- Llanfoist
- Llanfynydd
- Llanfynydd, Flintshire
- Llanfyrnach
- Llanfyrnach Rural District
- Llangadwaladr, Powys
- Llangaffo
- Llangattock, Powys
- Llangattock-Vibon-Avel
- Llangattock Court
- Llangedwyn
- Llangefni Town F.C.
- Llangefni railway station
- Llangennech derailment
- Llangennech railway station
- Llangenny
- Llangernyw
- Llangernyw Yew
- Llangoed Hall
- Llangollen Bridge
- Llangollen Canal Museum
- Llangollen Community Hospital
- Llangollen Town Hall
- Llangrannog
- Llangurig
- Llangurig branch
- Llangurig railway station
- Llangwm, Conwy
- Llangwm, Monmouthshire
- Llangwm, Pembrokeshire
- Llangwyryfon
- Llangybi, Monmouthshire
- Llangyfelach
- Llangyndeyrn
- Llangynidr Bridge
- Llangynog
- Llangynwyd
- Llangynwyd Castle
- Llanharan
- Llanharan House
- Llanharan RFC
- Llanharan railway station
- Llanhilleth
- Llanhilleth RFC
- Llanidan
- Llanidloes Town Hall
- Llanidloes War Memorial Hospital
- Llanidloes transmitting station
- Llanigon
- Llanilar railway station
- Llanishen, Monmouthshire
- Llanishen Golf Club
- Llanishen High School
- Llanllwchaiarn
- Llanmaes
- Llanmartin
- Llanmerewig
- Llanmihangel Place
- Llannerch-y-medd
- Llannerch Hall
- Llanon
- Llanpumpsaint railway station
- Llanpumsaint
- Llanrhaeadr-ym-Mochnant
- Llanrhian
- Llanrhos
- Llanrhydd
- Llanrhystyd Road railway station
- Llanrug
- Llanrumney Hall
- Llansaint
- Llansamlet
- Llansamlet (electoral ward)
- Llansamlet railway station
- Llansannor Court
- Llansantffraed
- Llansantffraed, Monmouthshire
- Llansawel transmitting station
- Llansilin
- Llanstadwell
- Llanstephan, Powys
- Llanstinan
- Llantarnam Abbey
- Llantarnam Grange Arts Centre
- Llantarnam railway station
- Llanteg
- Llanthony
- Llanthony Priory
- Llantood
- Llantrisant Castle
- Llantrisant Guildhall
- Llantrisant–Aberthaw line
- Llantwit Fardre
- Llantwit Major (electoral ward)
- Llantwit Major Roman Villa
- Llantwit Major Town Hall
- Llantwit Major railway station
- Llantysilio Hall
- Llanuwchllyn
- Llanvaches
- Llanvair Discoed
- Llanvapley
- Llanvihangel Crucorney
- Llanwddyn (electoral ward)
- Llanwenarth Baptist Chapel
- Llanwenarth House
- Llanwenarth Ultra
- Llanwenog sheep
- Llanwern (electoral ward)
- Llanwnda, Pembrokeshire
- Llanwrthwl
- Llanwrtyd Wells transmitting station
- Llanybri
- Llanychaer
- Llanymynech
- Llanyre
- Llawhaden
- Llawhaden Bridge
- Llawhaden Castle
- Llay
- Llech Ronw
- Llechryd
- Llechwedd Slate Caverns
- Llechwedd quarry
- Lledr Valley
- Llef o'r Nant
- Lleision ap Thomas
- Llety'r Dryw
- Llew Edwards
- Llew Smith
- Llewellyn Lloyd
- Llewellyn baronets
- Llewelyn, Saskatchewan
- Llewelyn Lloyd (naturalist)
- Lleweni Hall
- Lliedi (electoral ward)
- Lliswerry
- Lliswerry A.F.C.
- Lliw Valley
- Llowes
- Lloyd George Museum
- Lloyd George Society
- Lloyd Jones (figure skater)
- Lloyd Street Chapel, Llanelli
- Lloyd Woolf
- Lludd Llaw Eraint
- Lluest-wen Reservoir
- Lluesty Hospital
- Llugwy Hall
- Llwydcoed
- Llwydcoed (electoral ward)
- Llwyn-celyn Farmhouse
- Llwyn-y-gaer House, Tregare
- Llwyn Bryn-Dinas
- Llwyn Isaf
- Llwyncelyn, Ceredigion
- Llwyneinion
- Llwyngwern quarry
- Llwyngwril
- Llwynypia
- Llwynypia Hospital
- Llwynywermod
- Llygadwy
- Llyn-y-Foel
- Llyn Alaw
- Llyn Bedydd
- Llyn Bodgylched
- Llyn Bodgynydd
- Llyn Cefni
- Llyn Conwy
- Llyn Cwellyn
- Llyn Cwm-y-ffynnon
- Llyn Dinas
- Llyn Dulyn
- Llyn Eigiau
- Llyn Elsi
- Llyn Fanod
- Llyn Geirionydd
- Llyn Goddionduon
- Llyn Idwal
- Llyn Llech Owain
- Llyn Llywenan
- Llyn Mair
- Llyn Melynllyn
- Llyn Padarn
- Llyn Peris
- Llyn y Fan Fawr
- Llynnau Mymbyr
- Llynvi and Ogmore Railway
- Llys Euryn
- Llys Helig
- Llys Rhosyr
- Llysdinam
- Llysfaen
- Llysfaen railway station
- Llysfasi College
- Llywelyn Bren
- Llŷr
- Llŷr Ifans
- Local Government (Religious etc. Observances) Act 2015
- Local Government Association
- Local Government Commission for Wales
- Local board of health
- Locws international
- Loggerheads Country Park
- Login, Carmarthenshire
- London School of Commerce
- London Welsh School
- Lone Drøscher Nielsen
- Lone Star (band)
- Long Mountain transmitting station
- Lonza Bowdler
- Lord Chief Justice of England and Wales
- Los Angeles St. David's Day Festival
- Loughor Viaduct
- Loughor railway station
- Louie Myfanwy Thomas
- Louis Barnett Abrahams
- Louise Elliott
- Love Jones-Parry (British Army officer)
- Lower Celliau, Llangattock Lingoed
- Lower Dyffryn House, Grosmont
- Lower Hael Wood
- Lower House Stream Section
- Lower Penarth railway station
- Lower Swansea valley
- Lower Tresenny Barn
- Lowri Gwilym
- Lowri Morgan
- Lucas de la Rua
- Lucy Walter
- Luke Jephcott
- Luke Mariette
- Luke Thomas (chef)
- Lydart
- Lydstep Haven
- Lydstep Palace
- Lyn Davies
- Lyn Harding
- Lyndon Jones
- Lyndon Williams
- Lynn Bowles
- Lynn Davies
- Lynn Ungoed-Thomas
- MOMA, Wales
- MVM Entertainment
- Mab Jones
- Mabon ap Modron
- Machen
- Machen House
- Machen railway station
- Machynlleth Festival
- Machynlleth railway station
- Machynlleth transmitting station
- Machynys
- Machynys Ponds
- Mackenzie Martin
- Madog Crypl
- Madog Elfed
- Madog ap Gruffydd Maelor
- Madog ap Maredudd
- Madoline Thomas
- Madron (saint)
- Maelgwn ap Rhys
- Maelgwn ap Rhys (rebel)
- Maelienydd
- Maelor
- Maelor Gawr
- Maelor Saesneg
- Maelor Way
- Maen Achwyfan
- Maenan
- Maenclochog
- Maenclochog (electoral ward)
- Maenofferen quarry
- Maentwrog
- Maerdy
- Maerdy Farmhouse, Llanvihangel-Ystern-Llewern
- Maerdy railway station
- Maes (eisteddfod)
- Maes Manor
- Maesgeirchen
- Maesglas
- Maesglase
- Maeshafn
- Maeshyfryd, Anglesey
- Maesmawr Hall
- Maesteg (Ewenny Road) railway station
- Maesteg Community Hospital
- Maesteg House
- Maesteg Town Hall
- Maesteg railway station
- Maesycwmmer
- Maesycwmmer railway station
- Magenta (Welsh band)
- Maggie Jones, Baroness Jones of Whitchurch
- Magi Dodd
- Magor, Monmouthshire
- Magor Marsh
- Magor and St Mellons Rural District
- Mags Harries and Lajos Héder
- Mahmood Hussein Mattan
- Maiden Wells
- Main Arts Building, Bangor University
- Maindiff Court Hospital
- Maindy Barracks
- Maindy Centre
- Mair Garside
- Malator
- Malcolm Bishop
- Malcolm Nash
- Malcolm Uphill
- Malcolm Vaughan
- Malltraeth
- Mallwyd
- Malpas, Newport
- Manaw Gododdin
- Manawydan
- Manawydan fab Llŷr
- Manon Steffan Ros
- Manor Farmhouse, Crick
- Manor Farmhouse and Manor Cottage, Portskewett
- Manorbier
- Manorbier Castle
- Manorbier Dovecote
- Manorbier Newton
- Manordeifi
- Manordeifi Old Church
- Manorhaus, Ruthin
- Manorowen
- Mansion House, Cardiff
- Mansion House, Newport
- Mansion House, Swansea
- Manufacturing Engineering Centre
- Marc Phillips
- Marc Rhys
- Marc Treanor
- Marcher Radio Group
- Marchwiel
- Marcross
- Mared Williams
- Maredudd ab Ieuan ap Robert
- Maredudd ab Owain
- Maredudd ap Rhys Gryg
- Maredudd ap Tudur
- Marford
- Margam Abbey
- Margam Knuckle Yard
- Margaret Davies
- Margaret Davies (writer)
- Margaret Gordon (singer)
- Margaret Grey
- Margaret Hanmer
- Margaret John
- Margaret Jones (writer)
- Margaret Lloyd (Moravian)
- Margaret Phillips (actress)
- Margaret Pritchard
- Margaret Townsend Jenkins
- Marguerite Florence Laura Jarvis
- Mari Griffith
- Mari Strachan
- Maria Riddell
- Mariamne Johnes
- Marie Novello
- Marine Character Area
- Marine and Fisheries Division (Wales)
- Marion Eames
- Maritime Quarter
- Mark Davies (cricketer, born 1969)
- Mark Mouland
- Mark O'Leary (cricket coach)
- Mark Pilkington (golfer)
- Mark Sampson
- Mark Serwotka
- Mark Tami
- Mark Williams (politician)
- Market Arcade, Newport
- Markham, Caerphilly
- Marl (Conwy electoral ward)
- Marloes
- Marloes Sands
- Marloes and St Brides
- Marmaduke Middleton
- Marriage (Wales) Act 2010
- Marros Sands
- Marshes Turnpike Gate railway station
- Marshfield, Newport
- Marshfield railway station
- Marteine Lloyd
- Martha Llwyd
- Martin Caton
- Martin Moore-Bick
- Martin Rossiter
- Martletwy
- Martyn Williams
- Marvin Thompson
- Marwnad yr Ehedydd
- Mary Anne Edmunds
- Mary Balogh
- Mary Davies (lawn bowler)
- Mary Dendy
- Mary Drelincourt
- Mary Edith Nepean
- Mary Glynne
- Mary Jane Evans
- Mary Jane Innes
- Mary Jestyn Jeffreys
- Mary Lloyd (sculptor)
- Mary Lloyd Jones
- Mary Myfanwy Wood
- Mary Oliver Jones
- Mary Penry
- Mason Jones (fighter)
- Mason Ryan
- Mass spectrometry at Swansea
- Massey Sisters
- Math fab Mathonwy
- Mathafarn
- Mathern
- Mathern Mill
- Mathew Owens
- Mathias Maurice
- Mathias baronets
- Matholwch
- Mathry
- Mathry Road Halt railway station
- Matt Bush (taekwondo)
- Matt Jukes
- Matt Ryan (actor)
- Matt Whatley (footballer)
- Matthew Maynard
- Matthew Rees (footballer)
- Matthew Smith (footballer, born 1999)
- Matthew W. Davies
- Matthew Watkins
- Maurice FitzGerald, Lord of Llanstephan
- Maurice Jones (priest)
- Maurice O'Sullivan (boxer)
- Maurice Parry
- Mawddwy
- Mawddwy Railway
- Mawgan
- Mayals
- Mayor of Newport
- Mayor of Wrexham
- Mayzee Davies
- McNally v R
- Meat Promotion Wales
- Media Wales
- Medwyn Williams
- Meees
- Megan Davies (rugby union)
- Megan Watts Hughes
- Megan Webb
- Megan York
- Mei Jones
- Meifod
- Meinir Ffransis
- Meirion Mill Railway
- Meirionethshire Constabulary
- Mel Nott
- Mel Rees
- Melbourne Welsh Church
- Melin Adda
- Melin Hywel
- Melincourt Falls
- Meline, Pembrokeshire
- Melingriffith Brass Band
- Melissa Fletcher
- Melville Richards
- Members of the 6th Senedd
- Men of Harlech
- Menai (Caernarfon ward)
- Menai Bridge Tigers F.C.
- Menai Bridge railway station
- Menai Heritage Bridges Exhibition
- Menefrida
- Menna Fitzpatrick
- Menna Gallie
- Mental Capacity Act 2005
- Merched y Wawr
- Meredith (given name)
- Merionethshire County Council
- Merionethshire Railway
- Merlin's Bridge
- Mersley Park
- Mert and Marcus
- Merthyr Dyfan
- Merthyr Mawr
- Merthyr Mawr Sand Dunes
- Merthyr Pioneer
- Merthyr RFC
- Merthyr Synagogue
- Merthyr Tydfil Law Courts
- Merthyr Tydfil Town Hall
- Merthyr Tydfil railway station
- Merthyr Vale railway station
- Mervyn Bennett
- Mervyn Davies, Baron Davies of Abersoch
- Mervyn Roberts
- Meurig Dafydd
- Mewan
- Mia Arnesby Brown
- Michael Baer
- Michael Bogdanov
- Michael Crowe (footballer)
- Michael D. Jones
- Michael Harmer
- Michael Johnston (Welsh footballer)
- Michael Locke (stuntman)
- Michael Tooby
- Michael Wynn-Jones
- Michaelston-le-Pit and Leckwith
- Michaelston-y-Fedw
- Michelle Brown
- Mick Antoniw
- Mid-Rhondda RLFC
- Mid District Cup
- Mid Wales Corporate Joint Committee
- Mid and West Wales Fire and Rescue Service
- Middle Mill
- Middle Mouse
- Middleholm
- Middleton family
- Mike Dowler
- Mike Fantastic
- Mike Hedges (politician)
- Mike Jones (painter)
- Mike Pearson (footballer)
- Mildred Riddelsdell
- Miles Thomas
- Milford Central
- Milford Hakin
- Milford Haven Group
- Milford Haven Museum
- Milford Haven School
- Milford Haven Town Hall
- Milford West
- Milford and Pembrokeshire Bank
- Millbrook, Llanvihangel Crucorney
- Millennium Coastal Park
- Millennium Stadium Charitable Trust
- Mind (charity)
- Minera
- Minera Lead Mines
- Minffordd Hospital
- Minwear
- Minwear Wood
- Miranda Aldhouse-Green
- Miskin
- Miskin Manor
- Miskin Manor Cricket Club Ground
- Mission Gallery
- Mitch Clark (footballer, born 1999)
- Mitchel Troy
- Moat Lane Junction railway station
- Moc Morgan
- Mochdre, Conwy
- Mochdre & Pabo railway station
- Mochnant
- Modron
- Moel-y-Parc transmitting station
- Moel Arthur
- Moel Eilio
- Moel Famau
- Moel Maelogan
- Moel Oernant
- Moel Penderyn
- Moel Ysgyfarnogod
- Moel y Gaer, Bodfari
- Moel y Gaer, Llanbedr
- Moel y Gaer, Llantysilio
- Moel y Gaer, Rhosesmor
- Moel y Garnedd
- Moel y Gest
- Moel y Gydros
- Moelfre, Anglesey
- Mold Alexandra F.C.
- Mold Castle
- Mold Community Hospital
- Mold Law Courts
- Mold Town Hall
- Mold and Denbigh Junction Railway
- Molly Kelly (rugby union)
- Molly Parkin
- Momodou Touray
- Monaughty House
- Monington, Pembrokeshire
- Monk Street, Monmouth
- Monkton, Pembroke
- Monmouth Baptist Church
- Monmouth Cap
- Monmouth Castle
- Monmouth Cemetery
- Monmouth County Gaol
- Monmouth Methodist Church
- Monmouth Museum
- Monmouth Police Station
- Monmouth Poor Law Union
- Monmouth Troy railway station
- Monmouth Women's Festival
- Monmouth in the Mesolithic period
- Monmouth town walls and defences
- Monmouthpedia
- Monmouthshire (UK Parliament constituency)
- Monmouthshire Food Festival
- Monmouthshire Libraries
- Monnow Mill
- Monnow Street
- Monnow Vale Integrated Health and Social Care Facility
- Montgomery County Infirmary
- Montgomery Town Hall
- Montgomery railway station
- Monument to Sir Briggs
- Morfa, Bridgend
- Morfa, Swansea
- Morfa Bychan
- Morfa Conwy
- Morfa Dyffryn
- Morfa Nefyn
- Morgan (surname)
- Morgan B. Williams
- Morgan Edwards
- Morgan Gam
- Morgan Hector Phillips
- Morgan John Rhys
- Morgan Morgans (engineer)
- Morgan Morse
- Morgan Owen
- Morgan ab Athrwys
- Morgan ab Owain
- Morgan ap Hywel
- Morgans Hotel, Swansea
- Morganstown
- Moriah Aman Chapel
- Moridunum (Carmarthen)
- Morlais Castle
- Morris Castle
- Morris Davies
- Morris Williams
- Morrys Scott
- Morus Elfryn
- Morvil
- Morwyn Brebner
- Morys Clynnog
- Moss Valley, Wrexham
- Moss Valley Branch
- Mostyn
- Mostyn (Llandudno electoral ward)
- Mostyn (gallery)
- Mostyn Colliery
- Mostyn Hall
- Mount Pleasant, Swansea
- Mount Pleasant Hospital
- Mountain (TV series)
- Mountain Ash (electoral ward)
- Mountain Ash East
- Mountain Ash East (electoral ward)
- Mountain Ash General Hospital
- Mountain Ash RFC
- Mountain Ash Town Hall
- Mountain Ash railway station
- Mountain rescue in England and Wales
- Moylgrove
- Mudiad Amddiffyn Cymru
- Mumbles Battery
- Mumbles Lighthouse
- Mumbles Pier
- Municipal Corporations Act 1835
- Municipal Offices, Blaenavon
- Murder of Muriel Drinkwater
- MusicFest Aberystwyth
- Mydan
- Myddelton family
- Myddfai
- Myfanwy
- Myfanwy Haycock
- Myfanwy Howell
- Myfanwy Pryce
- Mynachlog-ddu
- Mynydd-y-Gaer
- Mynydd-y-Garreg
- Mynydd-y-glog
- Mynydd Allt-y-grug
- Mynydd Bach
- Mynydd Bach Trecastell
- Mynydd Bedwellte
- Mynydd Bodafon
- Mynydd Carn-y-cefn
- Mynydd Carningli
- Mynydd Cilfach-yr-encil
- Mynydd Dolgoed
- Mynydd Eglwysilan
- Mynydd Emroch television relay station
- Mynydd Fforest
- Mynydd Garnclochdy
- Mynydd Graig Goch
- Mynydd Hendre-ddu
- Mynydd Illtud
- Mynydd Llangorse
- Mynydd Llangyndeyrn
- Mynydd Llwyn-gwern
- Mynydd Machen
- Mynydd Mallaen
- Mynydd Meio
- Mynydd Merthyr
- Mynydd Myddfai
- Mynydd Nodol
- Mynydd Pencarreg transmitting station
- Mynydd Tir y Cwmwd
- Mynydd Troed
- Mynydd Twyn-glas
- Mynydd William Meyrick
- Mynydd y Betws
- Mynydd y Dref
- Mynydd y Drum
- Mynydd y Gaer
- Mynydd y Grug
- Mynydd y Gwair
- Mynydd y Lan
- Mynyddbach Chapel
- Mynyddislwyn
- Mynytho
- Myrddin Fardd
- Myrddin Wyllt
- Myriel Davies
- Myrtle House
- Môn FM
- NCFE (charity)
- NHS Pension Scheme
- NHS Protect
- NLW MS 20143A
- NLW MS 24029A (Boston Manuscript)
- Nancy Lee (writer)
- Nancy Wright
- Nannerch
- Nansi Richards
- Nansi Williams
- Nant Ffrwdwyllt
- Nant Glais Caves
- Nant Gwrtheyrn
- Nant Gwys
- Nant Llech
- Nant Menasgin
- Nantclwyd y Dre
- Nantcribba
- Nanteos Mansion
- Nantgarw
- Nantgarw (High Level) Halt railway station
- Nantgarw (Low Level) Halt railway station
- Nantgarw China Works
- Nantglyn
- Nantlle Ridge
- Nantlle railway station
- Nantmel Landfill Site
- Nantmor
- Nantmor railway station
- Nantybanw, Llantrisant
- Nantybwch railway station
- Nantycaws
- Nantyglo
- Nantyglo Round Towers
- Nantyglo railway station
- Narberth (electoral ward)
- Narberth Castle
- Narberth Hundred
- Narberth Rural District
- Narberth Town Hall
- Narrow Gauge Railway Museum
- Narrow Vein Mudstone Formation
- Nash, Newport
- Nash Manor
- Nash Point
- Natalia John
- Natasha Cockram
- Nathan Blake
- Nathan Foy
- Nathan Gage
- Nathan Gill
- Nathan Rocyn-Jones
- Nathan Stephens
- Nathan Wigg
- Nathanael Jones
- Nathaniel Wells
- National Assembly for Wales (Remuneration) Measure 2010
- National Botanic Garden of Wales
- National Counties of English and Welsh cricket
- National Dance Company Wales
- National Farmers' Union of England and Wales
- National Health Service (Wales) Act 2006
- National Institutions (Wales) Bill
- National Land and Property Gazetteer
- National Library of Wales General Manuscript Collection
- National Society for Promoting Religious Education
- National Union of Students Wales
- National Welsh Omnibus Services
- Nationally significant infrastructure project
- Navigation Colliery, Crumlin
- Neath Abbey television relay station
- Neath Castle
- Neath Corporation Tramways
- Neath East
- Neath Guardian
- Neath North
- Neath Port Talbot College
- Neath Town Hall
- Neath railway station
- Nebo Chapel, Hirwaun
- Ned Jenkins
- Nedd Fechan
- Neil Haddock
- Neil Rees (bowls)
- Neil Salathiel
- Neil Taylor (footballer)
- Nellie Evans Packard
- Nelson, Caerphilly
- Neptune (1836 ship)
- Nerys Johnson
- Nest Bloet
- Nesta Wyn Ellis
- Netball in Wales
- Neuadd Dwyfor
- Neuadd Maldwyn
- Nevern
- Neville Meade
- New Brighton, Wrexham
- New Hedges
- New House Farm, Llangybi
- New Inn, Carmarthenshire
- New Inn, Pembrokeshire
- New Moat
- New Radnor
- New Siloh Congregational Chapel
- New South Wales Act 1823
- New Theatre, Cardiff
- New Welsh Review
- Newborough F.C.
- Newborough Warren
- Newbridge, Wrexham
- Newbridge-on-Wye
- Newbridge Lodge
- Newbridge RFC
- Newbridge boxing club
- Newbridge on Wye railway station
- Newbridge railway station (Wales)
- Newcastle, Bridgend
- Newcastle Castle, Bridgend
- Newcastle Emlyn RFC
- Newcastle Emlyn railway station
- Newgale, Pembrokeshire
- Newhouse Farmhouse, Llanvetherine
- Newport, Pembrokeshire
- Newport Bay (Wales)
- Newport Castle, Pembrokeshire
- Newport Centre (Wales)
- Newport City Radio
- Newport City footbridge
- Newport Courtybella railway station
- Newport Crown Court
- Newport Deanery
- Newport Film School
- Newport Half Marathon
- Newport High School (Wales)
- Newport Mill Street railway station
- Newport Racecourse
- Newport Stadium
- Newport Titans
- Newport Town Bridge
- Newport West (UK Parliament constituency)
- Newport Wetlands
- Newport city centre
- Newport rail accident
- Newton, Swansea
- Newton Court
- Newton House (Brecon, Powys)
- Newtown A.F.C.
- Newtown Central
- Newtown West (Powys electoral ward)
- Newtown and Llanllwchaiarn
- Newtown railway station (Wales)
- Next Senedd election
- Next friend
- Neyland railway station
- Nia Griffith
- Nia Medi
- Niall Huggins
- Niamh Terry
- Nic Strange
- Nichola and Sarah Hope
- Nicholas Bagenal (Welsh MP)
- Nicholas Clagett
- Nicholas Evans (artist)
- Nicholas Jones (journalist)
- Nicholas Kemeys
- Nicholas Owen (priest)
- Nicholas Robinson (bishop)
- Nicholas Robinson (physician)
- Nick Fletcher (film editor)
- Nick Salapatas
- Nick Smith (British politician)
- Nick Thomas-Symonds
- Nicky Adams
- Nicky Arscott
- Nicky Piper
- Nicky Stevens
- Nigel Jenkins
- Nikita Lalwani
- Nina Shipperlee
- Ninian Park railway station
- Noah Ablett
- Noddfa Chapel, Ynysybwl
- Noel Forbes Humphreys
- Noel Lloyd
- Noel Trigg
- Nofit State Circus
- Nolton Haven
- Nolton and Roch
- North Gwent Deanery
- North Gwent Football League
- North Wales Alliance League
- North Wales Championships
- North Wales Corporate Joint Committee
- North Wales Crusaders statistics and records
- North Wales Fire and Rescue Service
- North Wales Main Line
- North Wales Men's League
- North Wales Metro
- North Wales Mineral Railway
- North Wales Path
- North Wales Society of Architects
- North Wales TV
- North Wales Wildlife Trust
- North West Men's League
- North and Mid Wales Trunk Road Agent
- North of Wales Open
- Northop
- North–South Wales railway
- Norton Court, Skenfrith
- Norwegian Church, Swansea
- Nos. 33, 35 & 37 Clwyd Street, Ruthin
- Nos Galan road race
- Nottage
- Nottage General Baptist & Unitarian Church
- Nottage Halt railway station
- Noyale
- Ntazana Mayembe
- Nyree Kindred
- Nyth-y-Gigfran quarry
- O Na! Y Morgans!
- O Spiritual Pilgrim
- Oakdale Workmen's Institute
- Oakeley Arms Hotel
- Oakleigh House School
- Odo Vivian, 3rd Baron Swansea
- Offa, Wrexham
- Ogmore Vale
- Ogmore centre
- Ogof Agen Allwedd
- Ogof Hen Ffynhonnau
- Ogof Hesp Alyn
- Ogwen Cottage
- Ogwen Rural District
- Old Bridge, Bridgend
- Old Colwyn railway station
- Old Court, Llangattock Lingoed
- Old Cwmbrân
- Old Gwernyfed
- Old Market Hall, Blaenau Ffestiniog
- Old Nag's Head, Monmouth
- Old Shire Hall, Cardigan
- Old St Mellons
- Old Swan, Rhayader
- Old Swansea Central Library
- Old Town Hall, Criccieth
- Old Town Hall, Llandrindod Wells
- Old Town Hall, Loughor
- Old Town Hall, Usk
- Old Trecastle Farmhouse, Pen-y-clawdd
- Old Vicarage, Glasbury
- Old Wye Bridge, Chepstow
- Oldcastle, Bridgend
- Olde Malsters, Usk
- Oli Cooper
- Oliver Harris (trade unionist)
- Oliver James (cricketer)
- Olwen Carey Evans
- Olwen Williams
- Omid Scobie
- One Day Like This (album)
- One Voice (Aled Jones album)
- One Voice at Christmas
- Onllwyn Brace
- Only Men Aloud!
- Only Two Can Play
- Opera School Wales
- Operation Crucible
- Opinion polling for the 2021 Senedd election
- Orbis Education and Care
- Ordinary Lies
- Ordovices
- Orielton, Pembrokeshire
- Orson Pratt Huish
- Otley Brewing Company
- Oudoceus
- Our Lady Queen of Peace Church, Llanelli
- Our Lady of Ransom and the Holy Souls Church, Llandrindod Wells
- Our Lady of Seven Sorrows Church, Dolgellau
- Overton Arcade
- Owain Brogyntyn
- Owain Cyfeiliog
- Owain Danwyn
- Owain Doull
- Owain Fychan
- Owain Glyndwr Hotel
- Owain Hopkins
- Owain ap Hywel (Glywysing)
- Owain ap Hywel Dda
- Owen Edwards (broadcaster)
- Owen Edwards (figure skater)
- Owen Gethin Jones
- Owen Glynne Jones
- Owen Harris
- Owen Hurcum
- Owen John
- Owen Jones (antiquary)
- Owen Lewis (bishop)
- Owen Morgan
- Owen Owen (school inspector)
- Owen Picton Davies
- Owen Price (writer)
- Owen Prys
- Owen Teale
- Owen Thomas (politician)
- Owen Williams (Owen Gwyrfai)
- Owen Wynne (civil servant)
- Owen ap Hugh
- Owen baronets
- Owen de la Pole
- Oxford History of Wales
- Oxwich
- Oxwich Bay
- Oystermouth Cemetery
- PS Nimrod
- PS Pen Cw (1912)
- Pablo Martinez (Welsh footballer)
- Padarn Bus
- Padarn Halt railway station
- Padarn Railway
- Paddy Buckley Round
- Paddy Hennessey
- Painscastle Castle
- Pair Dadeni
- Palaeontology in Wales
- Palladium, Llandudno
- Pam Ferris
- Pandy, Ceiriog Valley
- Pandy, Monmouthshire
- Pant-glas Farmhouse, Llanishen, Monmouthshire
- Pant-y-Saer Burial Chamber
- Pant railway station (Brecon Mountain Railway)
- Pant railway station (Brecon and Merthyr Tydfil Junction Railway)
- Pantdreiniog quarry
- Panteg A.F.C.
- Panteg and Griffithstown railway station
- Panteg cemetery
- Pantperthog
- Pantyffynnon railway station
- Pantysgawn
- ParcAberporth
- Parc Hospital
- Parc Tawe
- Parc and Dare Hall
- Park Congregational Chapel, Llanelli
- Park House, Cardiff
- Parks and open spaces in Wrexham
- Parliamentary Under-Secretary of State for Wales
- Partnership Council for Wales
- Parys Mountain Windmill
- Pascale Petit (poet)
- Pat Leach
- Pat Roberts (golfer)
- Pat Thomas (boxer)
- Paterchurch Tower
- Patience Agbabi
- Patrick Jones (poet)
- Patti Pavilion
- Paul Amos
- Paul Brand (journalist)
- Paul Davies (footballer, born 1952)
- Paul Giles
- Paul Griffiths (director)
- Paul Panton
- Paul Shackerley
- Paul Silk
- Paul Whitfield
- Paula Craig
- Paxton's Tower
- Peaceful Places
- Peacocks (clothing)
- Peblig, Caernarfon
- Peckett OQ Class
- Peers Memorial, Ruthin
- Peibio Clafrog
- Pele Tower, Angle
- Pembroke Coast Express
- Pembroke Deanery
- Pembroke Dock Market
- Pembroke Dock railway station
- Pembroke Monkton and St Mary South
- Pembroke Refinery
- Pembroke River
- Pembroke Rural District
- Pembroke St Mary North
- Pembroke St Mary South
- Pembroke St Michael
- Pembroke Town Hall
- Pembroke town walls
- Pembrokeshire Action To Combat Hardship
- Pembrokeshire Bank
- Pembrokeshire Coast Path
- Pembrokeshire Record Office
- Pen-y-Clawdd Court
- Pen-y-Fal Hospital
- Pen-y-Lan Hall
- Pen-y-Mount Junction railway station
- Pen-y-cae, Wrexham
- Pen-y-clawdd
- Pen-y-clawdd Farmhouse, Raglan
- Pen-y-crug
- Pen-y-garn, Ceredigion
- Pen-y-groes (electoral ward)
- Pen-yr-Orsedd quarry
- Pen Dinas
- Pen Llystyn
- Pen Ty-Nant
- Pen y Bryn
- Pen y Clawdd Castle
- Pen y Cymoedd
- Pen y Gaer
- Pen yr Ole Wen
- Penallt
- Penallt Old Church
- Penallta Colliery
- Penally
- Penally Abbey
- Penar branch line
- Penarth (Newtown and Llanllwchaiarn)
- Penarth Dock railway station
- Penarth Fawr
- Penarth Lifeboat Station
- Penarth Town Council
- Penarth railway station
- Penbanc
- Penboyr
- Penbryn
- Pencader Tunnel
- Pencaer
- Pencarreg Halt railway station
- Penclawdd RFC
- Pencoed RFC
- Penderyn distillery
- Penderyn transmitting station
- Pendine
- Pendraig
- Penffordd, Pembrokeshire
- Penfro (cantref)
- Pengam
- Pengwern
- Penhow
- Penhow Castle
- Penhow Woodlands National Nature Reserve
- Peniarth 109
- Peniarth 20
- Peniarth Manuscripts
- Penley
- Penley Community Hospital
- Penlle'r Castell
- Penllergaer
- Penllergare
- Penllyn (cantref)
- Penllyn railway station (Wales)
- Penmachno
- Penmachno quarry
- Penmaen, Caerphilly
- Penmaenmawr & Welsh Granite Co.
- Penmaenmawr Phoenix F.C.
- Penmaenmawr railway station
- Penmoelallt
- Penmynydd
- Pennard
- Penoyre House
- Penpergwm railway station
- Penperlleni
- Penrhiw-ceibr
- Penrhiwceiber
- Penrhos Feilw Standing Stones
- Penrhyn-coch
- Penrhyn Bay
- Penrhyn Castle Railway Museum
- Penrhyn Du Mines
- Penrhyn Quarry Railway
- Penrhys
- Penrice Castle
- Penrydd
- Penstrowed
- Penterry
- Pentlepoir
- Pentraeth
- Pentre
- Pentre Berw
- Pentre Broughton
- Pentre Bychan
- Pentre Camp
- Pentre Galar
- Pentre Halkyn
- Pentre Ifan
- Pentre Maelor
- Pentrebach
- Pentrecourt Platform railway station
- Pentrecwrt
- Pentrefoelas
- Pentrehobyn
- Pentremawr Colliery
- Pentrepiod Halt railway station (Monmouthshire)
- Pentwyn, Cardiff
- Pentwyn, Llanllowell
- Pentwyn, Rockfield
- Pentwyn Farm Grasslands
- Pentyrch
- Penuel Baptist Chapel, Carmarthen
- Penwyllt
- Penyberth
- Penybont F.C.
- Penychain railway station
- Penycloddiau
- Penycwm
- Penyffordd
- Penyffordd railway station
- Penygraig
- Penygraig RFC
- Penygroes, Gwynedd
- Penygroes, Pembrokeshire
- Penylan
- Penywaun
- People's Trust for Endangered Species
- People Against Wylfa-B
- Percy Bush
- Percy Hughes (footballer)
- Percy Thomas
- Peredur Lynch
- Permanent Secretary of the Welsh Government
- Personal Ordinariate of Our Lady of Walsingham
- Persondy, Mamhilad
- Perth-hir House
- Perthi-Duon Burial Chamber
- Pete's Eats Cafe
- Pete Fowler
- Pete Ham
- Peter Anthony Freeman
- Peter Bailey Williams
- Peter Bartrum
- Peter Black (Welsh politician)
- Peter Dawson (trade unionist)
- Peter Finch (poet)
- Peter George (author)
- Peter Greenaway
- Peter Havard-Williams
- Peter Howells (economist)
- Peter Jones (surgeon)
- Peter Lord (art historian)
- Peter Moore (serial killer)
- Peter Rees Jones
- Peter Roberts (priest)
- Peter Rogers (politician)
- Peter Vaughan (police officer)
- Peter Wingfield
- Peter de Leia
- Peterston-super-Ely (electoral ward)
- Peterston railway station
- Petty treason
- Peulan
- Phaldut Sharma
- Phil Bennett
- Phil Edwards (boxer)
- Phil Prosser
- Phil Tanner
- Philip Bisse
- Philip Ellis (priest)
- Philip George (cricketer)
- Philip Jones (civil servant)
- Philip Naylor-Leyland
- Philip Pugh
- Philip Squire
- Philip Yorke (antiquary)
- Phillida Nicholson
- Phineas John
- Phoebe Richards
- Phyllis Maud Performance Space
- Physicians of Myddfai
- Pierce Memorial Garden
- Pill Fort
- Pill Harriers RFC
- Pillar of Eliseg
- Pilleth
- Pipton
- Pistyll Cain
- Pitt's Head
- Planed Plant
- Planning Aid Wales
- Plantasia
- Plas-y-Nant railway station
- Plas Bennett
- Plas Bodegroes
- Plas Bodewryd
- Plas Brondanw
- Plas Cadnant
- Plas Coch
- Plas Coch, Ruthin
- Plas Machen
- Plas Machynlleth
- Plas Madoc F.C.
- Plas Menai
- Plas Mynach
- Plas Newydd, Llangollen
- Plas Taliaris
- Plas Teg
- Plasau Duon
- Plasmarl
- Plasnewydd
- Plaza cinema, Port Talbot
- Plymouth, Merthyr Tydfil
- Plynlimon
- Plynlimon and Hafan Tramway
- Pocket Venus
- Point FM
- Point Lynas Lighthouse
- Point of Ayr
- Police Central e-Crime Unit
- Police Superintendents' Association
- Polo Grounds, New Inn
- Poly-Olbion
- Ponciau
- Pont-ar-Gothi
- Pont Aberglaslyn
- Pont Abraham Services
- Pont Briwet
- Pont Croesor railway station
- Pont Cych
- Pont Cysyllte
- Pont Fawr
- Pont Llanio railway station
- Pont Minllyn
- Pontamman
- Pontardawe
- Pontardawe Arts Centre
- Pontardawe television relay station
- Pontarddulais Male Choir
- Pontarddulais railway station
- Pontfadog Oak
- Pontfaen
- Ponthir railway station
- Pontllanfraith
- Pontneddfechan
- Pontnewydd
- Pontnewynydd
- Pontnewynydd railway station
- Pontprennau
- Pontprennau and Old St Mellons
- Pontrhydyfen
- Pontrhydyrun Halt railway station
- Pontsionnorton
- Pontsticill Reservoir
- Pontsticill railway station
- Pontyates
- Pontyglasier
- Pontygwaith, Rhondda Cynon Taf
- Pontymister
- Pontypool Park
- Pontypool Town Hall
- Pontypridd Cottage Hospital
- Pontypridd Graig railway station
- Pontypridd RLFC
- Pontypridd Tram Road railway station
- Pontypridd and Rhondda Valley Tramway
- Pontypridd railway accident
- Pontypridd railway station
- Pool Quay
- Port Dinorwic railway station
- Port Eynon
- Port Talbot (electoral ward)
- Port Talbot Town F.C.
- Port Talbot War Memorial
- Port of Holyhead
- Port of Port Talbot
- Porth-Mawr Gatehouse
- Porth-y-carn, Usk
- Porth Dafarch
- Porth yr Aur
- Porthcawl railway station
- Porthclais
- Porthdinllaen
- Porthdinllaen Lifeboat Station
- Porthgain
- Porthgain Railway
- Porthkerry
- Porthmadog F.C.
- Porthmadog Harbour railway station
- Porthmadog railway station (Welsh Highland Heritage Railway)
- Portmeirion Town Hall
- Portobello House
- Portrait of the Artist as a Young Dog
- Portskewett Pier railway station
- Portskewett railway station
- Postgraduate Certificate in Education
- Pot Hole quarry
- Powis Almshouses
- Powyseg
- Poyser Street drill hall, Wrexham
- Preiddeu Annwfn
- Premiership Rugby Sevens Series
- Prendergast, Pembrokeshire
- Presaddfed Burial Chamber
- Presbyterian Church of India
- Preseli transmitting station
- Prestatyn
- Prestatyn Castle
- Prestatyn North
- Prestatyn Town F.C.
- Prestatyn railway station
- Preston Austin
- Prevenge
- Price (surname)
- Prince Llewellyn quarry
- Prince Philip Hospital
- Prince William Cup
- Prince of Wales Inn
- Priodas Pum Mil
- Priory (Abergavenny ward)
- Prison Commission (England and Wales)
- Prisoner and Escort
- Privies of Wales
- Pro14 Rainbow Cup
- Probation Service (England and Wales)
- Prophwyd y Jubili
- Proposed Welsh independence referendum
- Prosiect Z
- Prosser (surname)
- Pryce Pryce-Jones
- Pryderi
- Public Access Legal Support
- Public Access Scheme
- Public Audit (Wales) Act 2004
- Public Policy Institute for Wales
- Puffin Island (Anglesey)
- Pumsaint
- Punch House, Monmouth
- Puncheston
- Purple Plaques
- Pwll, Tregare
- Pwll y wrach
- Pwllglas
- Pwllgwaelod
- Pwllgwaun
- Pwllheli Corporation Tramways
- Pwllheli Lifeboat Station
- Pwllheli Sailing Club
- Pwllheli and Llanbedrog Tramway
- Pwllheli railway station
- Pwllpriddog Oak
- Pwllyrhwyad, Llanarth
- Pwyll
- Pye Corner railway station
- Pyle
- Pyle railway station
- Q Tour
- Quakers Yard
- Quakers Yard railway station
- Quarries of Vaynor
- Queen Gwendolen
- Queens Arcade
- Queens Head, Monmouth
- Queensferry, Flintshire
- Question The Mark
- Quicksand (Welsh band)
- R. B. Jones
- R. Gwynedd Parry
- R. Ifor Parry
- RAF Mona
- RGC 1404
- ROF Newport
- Race Horses
- Rachael Solomon
- Rachel Bromwich
- Rachel Davies (Rahel o Fôn)
- Rachel Evans
- Rachel Redford
- Rachel Rice
- Rachel Rowe
- Rachel Taylor (rugby union)
- Rachel Thomas (actress)
- Radio Bronglais
- Radio Cardiff
- Radio Carmarthenshire
- Radio Ceredigion
- Radio Tircoed
- Radnorshire Arms
- Radyr Golf Club
- Radyr Hydro Scheme
- Raglan Barracks, Newport
- Raglan Hundred
- Raglan Library
- Raglan Road Crossing Halt railway station
- Raglan railway station
- Railway with a Heart of Gold
- Ralph Churton
- Ralph Evans (boxer)
- Ralph Hancock (landscape gardener)
- Ramoth Chapel
- Rape Crisis England & Wales
- Rassa Railroad
- Ratgoed Tramway
- Ratgoed quarry
- Ray Chan (art director)
- Ray Daniel (Welsh footballer)
- Ray Lambert
- Rayner Memorial Clock Tower
- Rebecca De Filippo
- Rebecca Evans (soprano)
- Rebecca Llewellyn
- Recreation Ground, Llansantffraid-ym-Mechain
- Recreation Ground, Tredegar
- Red Book of Hergest
- Red Dragon Centre
- Red Roses
- Red Wharf Bay and Benllech railway station
- Red Wharf Bay branch line
- Redbrook Incline Bridge
- Redrow plc
- Redwick, Newport
- Redwood Building
- Redwood Memorial Hospital
- Rees Davies
- Reg Parker (footballer)
- Reg Turnell
- Reggie Gibbs
- Regimental Museum of The Royal Welsh
- Regional Offender Manager
- Registered historic parks and gardens in Blaenau Gwent
- Registered historic parks and gardens in Cardiff
- Registered historic parks and gardens in Torfaen
- Rent regulation in England and Wales
- Representative Body of the Church in Wales
- Requiem (TV series)
- Residential Property Tribunal Wales
- Rest Bay (electoral ward)
- Reynalton
- Rhaeadr y Cwm
- Rhayader
- Rhayader railway station
- Rhayader television relay station
- Rheinallt Nantlais Williams
- Rhian Cleverly
- Rhian Edwards (poet)
- Rhian Samuel
- Rhiannon Roberts
- Rhianon Passmore
- Rhigos
- Rhisiart Morgan Davies
- Rhiw-goch quarry, Conwy
- Rhiwbach Tramway
- Rhiwbach quarry
- Rhiwbina Garden Village
- Rhiwderin railway station
- Rhiwlas, Llandderfel
- Rhobell Fawr
- Rhod Gilbert
- Rhodri Glyn Thomas
- Rhodri Molwynog
- Rhodri Talfan Davies
- Rhondda East (UK Parliament constituency)
- Rhondda Heritage Park
- Rhondda Leader
- Rhondda Tramways Company
- Rhondda Transport Company
- Rhondda Tunnel
- Rhondda West (UK Parliament constituency)
- Rhoose
- Rhos-on-Sea
- Rhos Aelwyd F.C.
- Rhos Baptist Chapel, Mountain Ash
- Rhoscrowther
- Rhosddu
- Rhosddu Recreation Ground
- Rhosesmor
- Rhoshill, Pembrokeshire
- Rhosllanerchrugog F.C. (1889)
- Rhosllanerchrugog F.C. (2017)
- Rhosneigr railway station
- Rhosnesni
- Rhosnesni High School
- Rhosrobin
- Rhostyllen
- Rhostyllen F.C.
- Rhosybol
- Rhosydd Llanpumsaint
- Rhual
- Rhuddlan
- Rhuddlan Castle
- Rhuddlan railway station
- Rhug
- Rhun Hir ap Maelgwn
- Rhyd Ddu railway station
- Rhydlafar
- Rhydlewis
- Rhydtalog
- Rhydycroesau
- Rhydyfelin
- Rhydyfelin (Low Level) Halt railway station
- Rhydypennau, Ceredigion
- Rhyl Deanery
- Rhyl Golf Club
- Rhyl Ladies F.C.
- Rhyl Lifeboat Station
- Rhyl Miniature Railway
- Rhyl Town Hall
- Rhyl West
- Rhyl railway station
- Rhymney
- Rhymney Bridge railway station
- Rhymney Valley Ridgeway Walk
- Rhymney railway station
- Rhys Davies (golfer)
- Rhys Edwards
- Rhys Gabe
- Rhys Gruffydd
- Rhys Ifans
- Rhys Jones (archaeologist)
- Rhys Morgan (rugby union)
- Rhys Norrington-Davies
- Rhys Priestland
- Rhys Taylor
- Rhys Williams (Welsh actor)
- Rhys Williams (hurdler)
- Rhys Wilmot
- Rhys ap Gruffydd (rebel)
- Rhys ap Rhydderch
- Ricemarch Psalter
- Richard Booth
- Richard Brake
- Richard Bulkeley (died 1573)
- Richard Bulkeley (died 1621)
- Richard Davies (Quaker)
- Richard Davies (bishop)
- Richard Davies (trade unionist)
- Richard Edwards (Welsh politician)
- Richard Edwards (educator)
- Richard Ellis (librarian)
- Richard Fenton
- Richard Geraint Rees
- Richard Griffiths (industrialist)
- Richard Gwyn (Welsh writer)
- Richard Haig
- Richard Hancorne
- Richard Harries, Baron Harries of Pentregarth
- Richard Hughes Williams
- Richard Hurlin
- Richard John Lloyd Price
- Richard Jones (Ruthin priest)
- Richard Jones (priest, born 1603)
- Richard Lancaster
- Richard Lathrop
- Richard Livsey, Baron Livsey of Talgarth
- Richard Lloyd (Cardigan politician)
- Richard Llwyd
- Richard Lucas (priest)
- Richard Martin (Mayor of Swansea)
- Richard Mathias
- Richard Meade
- Richard Meredith (bishop)
- Richard Middleton (priest)
- Richard Milbourne
- Richard Owen (minister)
- Richard Pain
- Richard Parry-Jones
- Richard Rawlins
- Richard Richards (judge)
- Richard Smalbroke
- Richard Thomas (priest)
- Richard Thomas and Baldwins
- Richard Trevor (bishop)
- Richard Valentine Pitchford
- Richard Vaughan (died 1734)
- Richard Williams (alias Cromwell)
- Richards Brothers
- Ricky Evans (rugby union)
- Ricky Wright (ring announcer)
- Rights of Children and Young Persons (Wales) Measure 2011
- Rigrawst
- Ring of bells
- Ringland, Newport
- Ririd Myddelton
- Risca railway station
- River Camlad
- River Clywedog
- River Dysynni
- River Garw
- River Gavenny
- River Gwaun
- River Gwenfro
- River Haffes
- River Honddu (Monmouthshire)
- River Honddu (Powys)
- River Kenfig
- River Llynfi
- River Mellte
- River Neath
- River Nevern
- River Rhiw
- River Sawdde
- River Syfynwy
- River Thaw
- River Towy
- Riverside, Cardiff
- Riversimple
- Roath
- Roath Lock
- Rob Evans (footballer)
- Rob Howley
- Rob McCusker
- Rob Partridge
- Rob Wainwright (civil servant)
- Robbie Burton (footballer)
- Robert Baugh
- Robert Bryan (poet)
- Robert Davies (antiquary, died 1728)
- Robert Davies Roberts
- Robert Francis Jenner
- Robert Glatzel
- Robert Huber
- Robert Hughes (poet)
- Robert Isaac Jones
- Robert J. Davies
- Robert Jones (writer)
- Robert Jones Derfel
- Robert Knight (cricketer, born 1858)
- Robert Lee Roberts
- Robert Lougher
- Robert Mills-Roberts
- Robert Morton Nance
- Robert Myddelton (1678–1733)
- Robert Owen (theologian)
- Robert Pugh (Jesuit)
- Robert Puleston
- Robert Roberts (footballer, born 1864)
- Robert Roberts (footballer, born 1865)
- Robert Roberts (priest)
- Robert Rowthorn
- Robert Sherborne
- Robert Shields (VC)
- Robert Sidoli
- Robert Thomas Jenkins
- Robert Vaughn (Montana rancher)
- Robert Williams (Robert ap Gwilym Ddu)
- Robert Wynne (Chancellor of St Asaph)
- Robin Hood Inn, Monmouth
- Robin Huw Bowen
- Robin Llwyd ab Owain
- Robyn Lock
- Rock Mill Llandysul
- Rock cannon
- Rockfield, Monmouthshire
- Rockfield Studios
- Roger Addison
- Roger Edwards (Calvinist)
- Roger Hackney
- Roger Mortimer of Wigmore
- Roger Roberts, Baron Roberts of Llandudno
- Rogerstone railway station
- Rogiet
- Rogiet Primary School
- Rollin Menayese
- Roman Bridge railway station
- Roman Catholic Diocese of Menevia
- Roman Catholic Diocese of Newport and Menevia
- Roman Catholic Diocese of Wrexham
- Roman Jugg
- Ron Davies (footballer, born 1942)
- Ron Jones (commentator)
- Ronald Lockley
- Ronald Mathias
- Ronnie Boon
- Ronnie James
- Rookwood Hospital
- Rory Sutherland (advertising executive)
- Rosalie K. Fry
- Rosalind Hall
- Rosalind Rusbridge
- Rose Davies (activist)
- Rosebush, Pembrokeshire
- Rosemarket
- Rosina Davies
- Rossett
- Rotherslade
- Rough Cut (TV series)
- Rowen, Conwy
- Rowland Jones
- Rowland Lee (bishop)
- Rowland Meyrick
- Rowland Phillips (rugby)
- Rowland Vaughan (poet)
- Rowland Williams (Hwfa Môn)
- Rowland Williams (theologian)
- Rowley Thomas
- Roy Francis (rugby)
- Roy John (rugby union)
- Royal Arcade, Cardiff
- Royal George House
- Royal Glamorgan Hospital
- Royal House, Machynlleth
- Royal Porthcawl Golf Club
- Royal Watercolour Society of Wales
- Royal Welch Fusiliers Museum
- Royal Welsh Ladies' Choir
- Ruabon Brook Tramway
- Ruabon Grammar School
- Ruabon Moors
- Ruabon railway station
- Rubin Colwill
- Rudbaxton
- Rudbaxton Rath
- Rumney, Cardiff
- Rungano Nyoni
- Runston Chapel
- Ruperra Motte
- Rupert Charles Barneby
- Rupert Moon
- Rupert Morris
- Russell Deacon
- Russell George (Welsh politician)
- Russell Goodway
- Rusty Shackle
- Ruth Dunning
- Ruth Frankenberg
- Ruth Herbert Lewis
- Rutherford Health
- Ruthin Castle
- Ruthin Community Hospital
- Ruthin Craft Centre
- Ruthin Gaol
- Ruthin Rural District
- Ruthin Town Hall
- Ryan Conbeer
- Ryan Davies
- Ryan Day (snooker player)
- Ryan Howley
- Ryan Leak
- Ryan Nicholls
- Rydal Penrhos
- S4C Digital Networks
- SA1 Swansea Waterfront
- SY postcode area
- Sabrina Fortune
- Sadie Allen
- Safia Middleton-Patel
- Sage Todz
- Saint Afan
- Saint Baglan
- Saint Cadfan
- Saint Callwen
- Saint Canna
- Saint Dyfnog
- Saint Edern
- Saint Elen
- Saint Elli
- Saint Eluned
- Saint Grwst
- Saint Iestyn
- Saint Ilar
- Saint Mary & Saint Philopateer Abu Saifain Coptic Orthodox Church
- Saint Materiana
- Saint Peris
- Saint Tathyw
- Saint Tudno
- Saint Tudwal's Islands
- Saint Twrog
- Saint Tydecho
- Salem Chapel, Robertstown
- Salem Independent Chapel, Llandovery
- Sali Hughes
- Sally Peake
- Sally Roberts Jones
- Salt Island, Anglesey
- Saltney
- Salusbury baronets
- Salvia (artist)
- Sam Cross
- Sam O'Connor (rugby union)
- Samuel C. Hughes
- Samuel Ellis and Company
- Samuel Ifor Enoch
- Samuel Instone
- Samuel Jones (nonconformist)
- Sanatorium Park
- Sandfields, Port Talbot
- Sandfields, Swansea
- Sandfields West
- Sandford principle
- Sanjeev Gupta
- Sara Head
- Sara Sugarman
- Sarah Edith Wynne
- Sarah Jacob
- Sarah Prescott
- Sarah Thomas (centenarian)
- Sarah Wiltshire
- Sardis, south Pembrokeshire
- Sardis, southeast Pembrokeshire
- Sarn, Powys
- Sarn Complex
- Saron Chapel, Aberaman
- Sarra Elgan
- Saughall railway station
- Saundersfoot Railway
- Sbardun
- Sbectel
- Scarlet FM
- Scarlet Rebels
- Scethrog Tower
- Scheduled monuments in Carmarthenshire
- Scheduled monuments in Ceredigion
- Scheduled monuments in Gwynedd
- Scleddau
- Scolton Manor
- Scope (charity)
- Scott Davies (cyclist)
- Scott Smith (footballer, born 2001)
- Scott van-der-Sluis
- Scourfield baronets
- Scouting in Wales
- Scoveston
- Scoveston Fort
- Sea Roads
- Sea Sketches
- Seabank Hotel
- Sealand railway station
- Sealyham House
- Sebastopol, Torfaen
- Sebastopol railway station
- Second Drakeford government
- Secretary of State for Justice
- Seelie
- Seion Chapel, Cwmaman
- Seiont (electoral ward)
- Seisyll ap Clydog
- Seithenyn
- Selwyn Biggs
- Senghenydd RFC
- Seren Books
- Seren Bundy-Davies
- Seren Network
- Seren Smale
- Sesswick
- Seth Joshua
- Seth Powell
- Seven Eyes
- Seven Sisters, Neath Port Talbot
- Seven Sisters (electoral ward)
- Seven Sisters RFC
- Severn (Caldicot ward)
- Severnside
- Sexual abuse scandal in the Roman Catholic Archdiocese of Cardiff
- Seymour Berry, 1st Baron Buckland
- Shaheen Jafargholi
- Shan Morgan
- Shaun Pejic
- Sheep shagger
- Shell Grotto, Pontypool
- Sheriff of Carmarthen
- Shire Hall, Haverfordwest
- Shire Hall, Llandeilo
- Shire Hall, Llangefni
- Shire Hall, Newport
- Shire Hall, Presteigne
- Shirenewton
- Shirenewton Hall
- Shirley Dynevor
- Shirley Jones (artist)
- Shona Powell-Hughes
- Shoni Sguborfawr
- Short mat bowls
- Shotton, Flintshire
- Shotton railway station
- Sian Gibson
- Sian Williams (rugby union)
- Sifil A.F.C.
- Silian Halt railway station
- Siloah Chapel, Llanelli
- Siloh Chapel, Trecynon
- Silvanus Bevan
- Silver Star Holidays
- Simon Davey
- Simon Hart
- Simon Lloyd (priest, born 1756)
- Simon Thomas (politician)
- Sinfonia Newydd
- Singleton Park
- Sioned Harries
- Sioned James
- Sioned Williams
- Sir Charles Morgan, 2nd Baronet
- Sir Edward Morgan, 1st Baronet
- Sir Evan Williams, 1st Baronet
- Sir Gruffydd Llwyd
- Sir Haydn (locomotive)
- Sir Hugh Owen, 1st Baronet
- Sir Hugh Owen, 2nd Baronet (1641 creation)
- Sir Hugh Owen Owen, 2nd Baronet
- Sir John Owen, 1st Baronet
- Sir John Philipps, 1st Baronet
- Sir John Pryce, 1st Baronet
- Sir Rhys ap Gruffydd
- Sir Roger Mostyn, 3rd Baronet
- Sir Thomas Lloyd, 1st Baronet
- Sir Thomas Salusbury, 2nd Baronet
- Sir Thomas Wynn, 1st Baronet
- Sir William James Thomas, 1st Baronet
- Sirhowy
- Sirhowy Railway
- Siwan Davies
- Siwan Lillicrap
- Six Bells
- Six Bells Colliery
- Six Bells Halt railway station
- Sixth form college
- Size of Wales
- Siân Evans
- Siân Pari Huws
- Skanda Vale
- Skanda Vale Hospice
- Skenfrith
- Sker House
- Skerries Lighthouse
- Sketty
- Sketty Hall
- Skewen
- Skewen railway station
- Skills and Volunteering Cymru
- Skokholm Lighthouse
- Skrinkle Sandstones Group
- Slate operations on the Welsh Highland Railway
- Sleath Farmhouse, Llangua
- Slebech
- Slowly Rolling Camera
- Slwch Tump
- Smallest House in Great Britain
- Smalls Lighthouse
- Smart's Bridge
- Smarts Quarry
- Snelling Sevens
- Snowdon Ranger railway station
- Snowdon Volcanic Group
- Snowdonia Marathon
- Snowdonia Society
- Soar Chapel, Cwmaman
- Soar Chapel, Llanelli
- Soar Chapel, Llwydcoed
- Society of Gentleman Practisers in the Courts of Law and Equity
- Sodston Manor
- Solicitor General for England and Wales
- Solva
- Solva Woollen Mill
- Solva limekilns
- Somerton Park
- Somerton TARDIS
- Sona Burstein
- Sophia Crichton-Stuart, Marchioness of Bute
- Sophia Gardens (cricket ground)
- Sophia Smale
- Sophie Anderson (author)
- Sophie Howe
- Sophie Melville
- Sorba Thomas
- Sosban Fach
- Soul Crew
- South Bishop Lighthouse
- South East Wales Corporate Joint Committee
- South East Wales Transport Alliance
- South Glamorgan County Council
- South Glamorganshire (UK Parliament constituency)
- South Hook LNG terminal
- South Monmouthshire (UK Parliament constituency)
- South Stack
- South Wales Coast and Severn Estuary Coastal Path
- South Wales East (Senedd electoral region)
- South Wales Geologists' Association
- South Wales Men's League
- South Wales Mineral Railway
- South Wales Miners' Museum
- South Wales Mountaineering Club
- South Wales Trunk Road Agent
- South West Wales Corporate Joint Committee
- Southern Distributor Road
- Southern Examining Group
- Southerndown Coast
- Southerndown Road railway station
- Southgate, Swansea
- Sparks in the Park
- Spectrum Technologies
- Spencer Davis
- Spencer John
- Spillers Records
- Spittal, Pembrokeshire
- St-y-Nyll
- St. Athan railway station
- St. David's Shopping Centre (Swansea)
- St. Davids Polo and Racing Club
- St Afan's Church, Llanafan
- St Alban's Church, Llanelli
- St Alban-on-the-Moors Church
- St Andrew's Church, Bayvil
- St Andrew's Church, Penrice
- St Andrew's Church, Presteigne
- St Andrew's Church, Tredunnock
- St Andrews Major
- St Anne's Church, Ynyshir
- St Anne's House, Tintern
- St Anno's Church, Llananno
- St Asaph (Denbigh) Rural District
- St Athan (electoral ward)
- St Athan Road railway station
- St Augustine's Church, Penarth
- St Augustine's Church, Rumney
- St Baglan's Church, Llanfaglan
- St Bartholomew's Church, Llanover
- St Bartholomew's Church, Sealand
- St Benedict's Church, Gyffin
- St Beuno's Church, Clynnog Fawr
- St Beuno's Church, Penmorfa
- St Beuno's Church, Pistyll
- St Bilo's Church, Llanfilo
- St Bride's Church, Llansantffraed
- St Brides
- St Brides Castle
- St Brides Netherwent
- St Bridget's Church, Skenfrith
- St Bridget's Church, St Brides Wentlooge
- St Brothen's Church, Llanfrothen
- St Cadoc's Church, Caerleon
- St Cadoc's Church, Cheriton
- St Cadoc's Church, Glynneath
- St Cadoc's Church, Llancarfan
- St Cadoc's Church, Llangattock-juxta-Usk
- St Cadoc's Church, Llangattock Lingoed
- St Cadoc's Church, Llangattock Vibon Avel
- St Cadoc's Church, Penrhos
- St Cadoc's Church, Raglan
- St Cadoc's Hospital
- St Canna Church, Llangan
- St Catharine's Church, Baglan
- St Catherine's Church, Pontypridd
- St Catherine's Fort
- St Catherine's Island
- St Catwg's Church, Cwmcarvan
- St Catwg's Church, Gelligaer
- St Cawrdaf's Church, Abererch
- St Cenedlon's Church, Rockfield
- St Cewydd's Church, Disserth
- St Clears Town Hall
- St Collen's Church, Llangollen
- St Crallo's Church
- St Cybi's Church, Llangybi, Monmouthshire
- St Cynhaearn's Church, Ynyscynhaearn
- St Cynhafal's Church, Llangynhafal
- St Cynog's Church, Defynnog
- St Cyres School
- St David's, Cardiff
- St David's (Pembrokeshire electoral ward)
- St David's Catholic College
- St David's Church, Glascwm
- St David's Church, Hubberston
- St David's Church, Laleston
- St David's Church, Llanddew
- St David's Church, Llanddewi Brefi
- St David's Church, Llanddewi Rhydderch
- St David's Church, Llanddewi Skirrid
- St David's Church, Llanfaes
- St David's Church, Llangeview
- St David's Church, Llanthony
- St David's Church, Trostrey
- St David's Church (Eglwys Dewi Sant), Carmarthen
- St David's Hospital, Carmarthen
- St David's Hotel, Harlech
- St David's Welsh Church, Colwyn Bay
- St David Lewis and St Francis Xavier Church, Usk
- St Davids City Hall
- St Davids Society of Singapore
- St Decuman's Church, Rhoscrowther
- St Derfel's Church, Llandderfel
- St Dingat's Church, Dingestow
- St Dochdwy's Church, Llandough
- St Dogmaels
- St Dogmaels television relay station
- St Dogmells Rural District
- St Donat's Church, St Donats
- St Donat's Church, Welsh St Donats
- St Dyfnog's Church, Llanrhaeadr
- St Edward's Church, Roath
- St Elidyr's Church, Stackpole
- St Elli's Church, Llanelly
- St Ellyw's Church, Llanelieu
- St Elvan's Church, Aberdare
- St Elvis, Pembrokeshire
- St Engan's Church, Llanengan
- St Ethelwold's Church, Shotton
- St Fagan's Church, Trecynon
- St Fagans
- St Fagans railway station
- St Florence
- St George's Channel
- St Georges super Ely
- St Govan's Chapel
- St Govan's Church, Llangovan
- St Gredifael's Church, Penmynydd
- St Grwst's Church, Llanrwst
- St Gwenog's Church
- St Gwynhoydl's Church, Llangwnnadl
- St Hilary's Church, St Hilary, Vale of Glamorgan
- St Hilary Platform railway station
- St Hilary transmitting station
- St Hywyn's Church, Aberdaron
- St Iestyn's Church, Llaniestyn, Gwynedd
- St Illtyd
- St Ishmaels
- St Issui's Church, Partrishow
- St James's Church, Llangua
- St James's Church, Rudry
- St James Square, Monmouth
- St Jerome's Church, Llangwm
- St John's, Monmouth
- St John's Church, Aberdare
- St John's Church, Llandenny
- St John Ambulance Cymru
- St John the Baptist Church, Cardiff
- St John the Baptist Church, Porthcawl
- St John the Baptist School, Aberdare
- St Joseph's Cathedral, Swansea
- St Joseph's Catholic and Anglican High School
- St Joseph's Church, Cardiff
- St Joseph's Church, Port Talbot
- St Joseph's Hospital, Newport
- St Joseph's Roman Catholic High School, Newport
- St Julians, Newport
- St Justinian
- St Justinian's Chapel
- St Lawrence Hospital, Chepstow
- St Lythans
- St Madoc's Church, Llanbadoc
- St Maethlu's Church, Llanfaethlu
- St Marcella's Church, Denbigh
- St Margaret's Island
- St Mark's Church, Connah's Quay
- St Mark's Church, Newport
- St Martin's Church, Cwmyoy
- St Martin's Church, Pen-y-clawdd
- St Martin's Comprehensive School
- St Mary's (Chepstow ward)
- St Mary's Abbey ruins, Bardsey Island
- St Mary's Church, Beddgelert
- St Mary's Church, Betws-y-Coed
- St Mary's Church, Brecon
- St Mary's Church, Caerhun
- St Mary's Church, Caldicot
- St Mary's Church, Carew
- St Mary's Church, Chirk
- St Mary's Church, Downe
- St Mary's Church, Gladestry
- St Mary's Church, Haverfordwest
- St Mary's Church, Llanfair-ar-y-bryn
- St Mary's Church, Llanfair-yn-Neubwll
- St Mary's Church, Llanfairpwllgwyngyll
- St Mary's Church, Llanllwch
- St Mary's Church, Magor
- St Mary's Church, Nash
- St Mary's Church, Pembroke
- St Mary's Church, Penllech
- St Mary's Church, Portskewett
- St Mary's Church, Rogiet
- St Mary's Church, Ruabon
- St Mary's Church, St Fagans
- St Mary's Church, Swansea
- St Mary's Church, Tenby
- St Mary's Church, Tregare
- St Mary's Church, Undy
- St Mary's Church, Welshpool
- St Mary's Church, Whitchurch
- St Mary's College, Aberystwyth
- St Mary's Roman Catholic Church, Monmouth
- St Mary Church Road railway station
- St Mary Hill
- St Mary Magdalene's Church, Bleddfa
- St Mary Out Liberty
- St Mary Street/High Street
- St Mary and All Saints' Church, Conwy
- St Mary and St Bodfan Church, Llanaber
- St Mary and St Egryn's Church, Llanegryn
- St Matthew's Church, Llandefalle
- St Matthew's Church, Saltney
- St Mechell's Church, Llanfechell
- St Mellons Church
- St Mellons Rural District
- St Meugan's Church, Llanrhydd
- St Michael's Church, Llanfihangel Tor-y-Mynydd
- St Michael's Church, Llanvihangel Crucorney
- St Michael's Church, Llanvihangel Gobion
- St Michael's Church, Michaelchurch-on-Arrow
- St Michael's Church, Michaelston-le-Pit
- St Michael's Church, Myddfai
- St Michael's Church, Rudbaxton
- St Michael's Church, Tremain
- St Michael's School, Llanelli
- St Michael and All Angels' Church, Welshampton
- St Michael and All Angels, Mitchel Troy
- St Michael and All Angels Church, Colwinston
- St Michael and All Angels Church, Llanfihangel Rogiet
- St Michael and All Angels Church, Tongwynlais
- St Nicholas & St John, Monkton
- St Nicholas Church, Church Stoke
- St Odoceus' Church, Llandawke
- St Padarn's Church, Llanberis
- St Padarn's Institute
- St Padrig's Church, Llanbadrig
- St Patrick's Church, Newport
- St Paul's Church, Colwyn Bay
- St Paul's Church, Newport, Wales
- St Peris's Church, Nant Peris
- St Peter's Church, Bryngwyn
- St Peter's Church, Glasbury
- St Peter's Church, Llanwenarth
- St Peter's Church, Roath
- St Peter's Church, Wentlooge
- St Peter ad Vincula, Pennal
- St Philip's Church, Caerdeon
- St Pierre, Monmouthshire
- St Saeran's Church, Llanynys
- St Saviour's Church, Splott
- St Senwyr's Church
- St Silin's Church, Llansilin
- St Teilo's Church, Llanarth
- St Teilo's Church, Llandeilo
- St Teilo's Church, Llandeilo Tal-y-bont
- St Teilo's Church, Llandeloy
- St Teilo's Church, Llantilio Crossenny
- St Teilo's Church, Llantilio Pertholey
- St Teilo's Church in Wales High School
- St Tewdric's Church
- St Theodore's Church, Port Talbot
- St Thomas, Swansea
- St Thomas à Becket Chapel, Milford Haven
- St Trygarn's Church, Llandrygarn
- St Twrog's Church, Maentwrog
- St Tydfil's Hospital
- St Tyfi's Church, Llandyfeisant
- St Tysilio's Church, Llantysilio
- St Tysoi's Church, Llansoy
- St Winefride's Church, Holywell
- St Winifred's School
- St Wonnow's Church, Wonastow
- St Woolos Hospital
- Stable Block, Tredegar House
- Stack Rock Fort
- Stackpole Estate
- Stackpole and Castlemartin
- Stagecoach South Wales
- Stan Richards (footballer)
- Stanage Park
- Stanley Cornwell Lewis
- Stanley Embankment
- Stanley Sailors' Hospital
- Stanley Winmill
- Stansty
- Star, Pembrokeshire
- Stebonheath Park
- Steel Company of Wales Ground
- Steelfab
- Steelhouse Festival
- Steeltown Murders
- Stefan Jenkins
- Steffan Lewis
- Steffan Rhodri
- Stelvio House, Newport
- Stepaside, Pembrokeshire
- Stephen Knight (poet)
- Stephen Morris (runner)
- Stephen Williams (cyclist)
- Stepney baronets
- Steve Curtis (boxer)
- Steve Morris (rugby union)
- Steve Rowland (footballer)
- Steve Sims (boxer)
- Steynton
- Stow Hill
- Stradey Castle
- Strata Florida railway station
- Strata Marcella
- Striguil
- Strumble Head
- Strumble Head Lighthouse
- Stryt Las Park
- Stuart Davies (rugby union)
- Stuart Harrison
- Stuart Richardson
- Stuart Williams (footballer)
- Studio with Gloves
- Stwnsh
- Submarine (2010 film)
- Sudbrook, Monmouthshire
- Sue Butterworth
- Sue Jones-Davies
- Sugar Loaf, Monmouthshire
- Sugar Loaf railway station
- Sully Centurions Cricket Club Ground
- Sully Hospital
- Sully Island
- Sully railway station
- Summerhill, Pembrokeshire
- Summerhill, Wrexham
- Summit railway station (Snowdon Mountain Railway)
- Survey of Anglo-Welsh Dialects
- Susan Elan Jones
- Susannah Jane Rankin
- Suspensory Act 1914
- Swanbridge railway station
- Swanline
- Swansea Airport
- Swansea Barrage
- Swansea Bay (region)
- Swansea Bay City Region
- Swansea Bay Radio
- Swansea Beach
- Swansea Civic Centre
- Swansea Constitution Hill Incline Tramway
- Swansea Crown Court
- Swansea Devil
- Swansea District line
- Swansea Enterprise Park
- Swansea Grand Theatre
- Swansea Guildhall
- Swansea Harriers Athletics Club
- Swansea Improvements and Tramway Company
- Swansea Jack
- Swansea Magpies
- Swansea Maliphant Depot
- Swansea Metropolitan University
- Swansea Museum
- Swansea NHS Trust
- Swansea Philharmonic Choir
- Swansea SW Wales (DAB Multiplex)
- Swansea University Medical School
- Swansea Vale Railway
- Swansea War Memorial
- Swing Bridge, River Neath
- Swiss Cottage, Rockfield
- Swyddfa'r Sir
- Swyddffynnon
- Sychdyn
- Sychnant Pass
- Syd Morgan
- Syd Thomas
- Syd Worgan
- Sylvia Gore
- Syr Hywel y Fwyall
- Sŵnami
- T. E. Nicholas
- T. Gwynn Jones
- T. Rowland Hughes
- TJ's
- TSS St David (1947)
- Tabernacle Baptist Chapel, Cwmyoy
- Tabernacle Chapel, Abercynon
- Tabernacle Chapel, Aberdare
- Tabernacle Chapel, Llandovery
- Tabernacle Chapel, Morriston
- Tabernacle Chapel, Ynysybwl
- Tafarn Sinc
- Taff's Well
- Taff Bargoed
- Taff Vale Park
- Taffs Well railway station
- Taffy was a Welshman
- Taibach
- Taint (band)
- Tair Carn Uchaf
- Tako Taal
- Tal-y-Cafn
- Tal-y-Cafn railway station
- Tal-y-bont, Ceredigion
- Tal-y-bont, Conwy
- Tal-y-llyn, Anglesey
- Tal-y-llyn, Gwynedd
- Tal-y-llyn Lake
- Tal Selley
- Tal y Fan
- Talbot Athletic Ground
- Talbot Green
- Tales from the Green Valley
- Talgarth Town Hall
- Talgarth railway station
- Taliesin Arts Centre
- Taliesin Williams
- Talisa García
- Talley Lakes
- Talley transmitting station
- Talsarn Halt railway station
- Talybont-on-Usk
- Talybont-on-Usk (electoral ward)
- Talyllyn (locomotive)
- Talysarn
- Talywain
- Tammy Jones
- Tamsin Dunwoody
- Tan-y-Bwlch railway station
- Tan-y-Manod railway station
- Tanyfron
- Tanygrisiau
- Taplas
- Tara Bethan
- Tarian y Gweithiwr
- Tarki Micallef
- Tavernspite
- Tawe-Uchaf
- Tawe Phoenix Boat Club
- Technium
- Ted Peterson
- Ted Robbins (football administrator)
- Ted Rowlands, Baron Rowlands
- Tegan Nox
- Tegau Eurfron
- Tegeingl
- Tegid Foel
- Tegryn
- Tegwared y Bais Wen
- Tegwen Matthews
- Teigl Halt railway station
- Teleri Bevan
- Teleri Wyn Davies
- Temperance Town, Cardiff
- Templeton, Pembrokeshire
- Tempore
- Tenby Cottage Hospital
- Tenby Davies
- Tenby Town Hall
- Tenby railway station
- Tenby transmitting station
- Tenpin Bowling Association of Wales
- Terry Gooding
- Terry Morris (artist and photographer)
- Terwyn Davies
- Tesni Murphy
- Test, Trace, Protect
- Tewdrig
- Tewdwr Mawr
- The 16' Club
- The Aberdare Leader
- The Airfield
- The Angel Hotel, Abergavenny
- The Angel Hotel, Monmouth
- The Anglo-Welsh Review
- The Argoed, Penallt
- The Artha, Tregare
- The Ash Grove
- The Barcud Derwen Group
- The Bards of Wales
- The Beauties of England and Wales
- The Bells of Aberdovey
- The Bendricks
- The Big Welsh Bite Food Festival
- The Bitches
- The Blue Anchor Inn
- The Bull Hotel, Llangefni
- The Bulwarks, Porthkerry
- The Bush Inn
- The Call Centre
- The Captain's Wife
- The Cardiff Times
- The Celts (2000 TV series)
- The Chase, Ross-on-Wye
- The Church of Jesus Christ of Latter-day Saints in Wales
- The Cross, Monmouth
- The Cwm, Llantrisant, Monmouthshire
- The Cynon Valley Party
- The Descent from the Cross (David Folley)
- The Dream of Rhonabwy
- The Elizabethan Madrigal Singers
- The Full Ponty
- The Gaer House
- The Gate Arts Centre
- The Gauntlet (novel)
- The Georgian Group
- The Gnoll
- The Gop
- The Great Deed of Gwilym Bevan
- The Griffin, Monmouth
- The Grove, Narberth
- The Grove (Pembrokeshire hotel)
- The Havens
- The Hayes
- The Herberts
- The Hobbit's Tale
- The Hotel Portmeirion
- The Interns (band)
- The Joy Formidable
- The Kardomah Gang
- The Land (adventure playground)
- The Leader (Welsh newspaper)
- The Life Story of David Lloyd George
- The Light in the Hall
- The Maelor School
- The Martini Henry Rifles
- The Morning Star, Ruthin
- The Mumbles Lifeboat Station
- The Mynde (Caerleon)
- The National (Wales)
- The Old Cottage, Treadam, Llantilio Crossenny
- The Old Court House, Ruthin
- The Old Mill, Ruthin
- The Old Rectory, Llanbedr
- The Oval (Llandudno)
- The Pant, Llanvihangel-Ystern-Llewern
- The Parlour
- The Pembrokeshire Murders
- The Peth
- The Point, Cardiff
- The Poppies (Welsh band)
- The Procurator's House, Magor
- The Rivers Trust
- The Rock, Rhosymedre
- The Rofft
- The Royal Welch Fusiliers (march)
- The Saga of Erik the Viking
- The Secret Room
- The Skerries, Isle of Anglesey
- The Skirrid Inn
- The Three Horseshoes, Monmouth
- The Tithe Barn, Abergavenny
- The Tower, Meridian Quay
- The Tubs
- The Vine Tree
- The Walnut Tree (restaurant)
- The Welsh Boat Race
- The Welsh Group
- The Widow (TV series)
- Theatr Clwyd
- Theatr Gwaun
- Theo Wharton
- Theodore Huckle
- Theodore Price
- Theophilus Jones (historian)
- This Week (newspaper)
- Thomas Artemus Jones
- Thomas Barker (painter)
- Thomas Bartley (footballer)
- Thomas Benbow Phillips
- Thomas Bevan (missionary)
- Thomas Briscoe
- Thomas Button
- Thomas Chapman (footballer)
- Thomas Charles-Edwards
- Thomas Coke (bishop)
- Thomas David Frank Evans
- Thomas Davies (footballer, born 2003)
- Thomas Davies (physician)
- Thomas E. Stephens (artist)
- Thomas Ellis (priest, died 1673)
- Thomas Ellis (priest, died 1792)
- Thomas Floyd
- Thomas Gee
- Thomas Glyn Watkin
- Thomas Hanbury-Tracy, 2nd Baron Sudeley
- Thomas Hancorne (1642 – 1731)
- Thomas Hancorne (1752–1838)
- Thomas Henry Blythe
- Thomas Herbert, 8th Earl of Pembroke
- Thomas Hill of Dennis
- Thomas Huet
- Thomas Hughes Jones
- Thomas Iorwerth Ellis
- Thomas John Jones
- Thomas Johnes (died 1780)
- Thomas Johns (minister)
- Thomas Jones (minister)
- Thomas Jones (priest)
- Thomas L. Thomas
- Thomas Levi
- Thomas Llewellyn Thomas
- Thomas Mansel, 1st Baron Mansel
- Thomas Morgan (Afanwyson)
- Thomas Morgan (navy chaplain)
- Thomas Nicholas (antiquary)
- Thomas Owen (priest)
- Thomas Pardo
- Thomas Parry (Comptroller of the Household)
- Thomas Pearson Moody
- Thomas Powel
- Thomas Powell (Cardiganshire MP)
- Thomas Powell (rector of Cantref)
- Thomas Purnell (critic)
- Thomas Rees (Congregational minister)
- Thomas Rees (Twm Carnabwth)
- Thomas Rhondda Williams
- Thomas Richard Lloyd
- Thomas Richards (priest)
- Thomas Roberts (radical writer)
- Thomas Scott-Ellis, 8th Baron Howard de Walden
- Thomas Skevington
- Thomas Thomas (architect)
- Thomas Thomas (priest)
- Thomas Wallensis
- Thomas Williams Phillips
- Thomas Young (bishop)
- Thornhill, Cardiff
- Thornhill Cemetery and Cardiff Crematorium
- Thornton, Pembrokeshire
- Those Damn Crows
- Three Castles Walk, Monmouthshire
- Three Cocks
- Thyrza Anne Leyshon
- Tich Gwilym
- Tiers Cross
- Tiger Bay Brawlers
- Tiger Bay Warriors
- Tigertailz
- Tim Vincent
- Tinopolis
- Tintern
- Tintern Wireworks Branch
- Tintern railway station
- Tir Gofal
- Tollgate House, Mitchel Troy
- Tom Burns (bishop)
- Tom Cullen
- Tom Doran (boxer)
- Tom Hopkins (rugby league)
- Tom Lockyer
- Tom Lucas (trade unionist)
- Tom Norris (boxer)
- Tom Pook
- Tom Rhys Harries
- Tom Rolt (locomotive)
- Tom Walley
- Tom Ward
- Tom Williams (rugby union, born 1887)
- Tom Worthington (footballer)
- Tomen y Mur
- Tomen yr Allt
- Tommy Bamford
- Tommy David
- Tommy Davies
- Tommy Farr
- Ton Farmhouse, Llangybi
- Tondu railway station
- Tonfanau railway station
- Tongwynlais
- Tongwynlais railway station
- Tonna, Neath
- Tonna Hospital
- Tonna RFC
- Tonteg
- Tonteg Halt railway station
- Tony Bianchi
- Tony Charles
- Tony Etoria
- Tony James (Welsh footballer, born 1978)
- Tony Jewell (doctor)
- Tony Lewis
- Tony Roberts (footballer)
- Tonyrefail
- Tonyrefail East
- Torch Theatre, Milford Haven
- Torchwood (audio drama series)
- Torfaen (UK Parliament constituency)
- Torfaen Museum
- Torfaen Tigers
- Torpantau railway station
- Tour de Gwent
- Town, Merthyr Tydfil
- Town Farm, Grosmont
- Trade Centre Group
- Trade Union (Wales) Act 2017
- Traeth Bychan
- Traeth Mawr
- Traeth Mawr Loop
- Trahaearn ap Caradog
- Transport for Wales
- Transport for Wales Rail
- TrawsCambria
- Trawscoed fort
- Trawscoed railway station
- Trawsfynydd
- Trawsgoed
- Tre'r Ceiri
- Tre-Taliesin
- Treachery of the Blue Books
- Trearddur
- Treaty of Aberconwy
- Treaty of Gwerneigron
- Trebanog
- Trebanos
- Treberfydd
- Treborth Botanic Garden
- Treborth railway station
- Trecwn
- Trecynon
- Tredean House, Devauden
- Tredegar General Hospital
- Tredegar House
- Tredegar Iron and Coal Company
- Tredegar Park and Marshfield
- Tredegar Town Band
- Tredegar Town Hall
- Tredegar railway station
- Tredunnock
- Tref Alaw
- Trefasser
- Trefeca
- Trefelin B.G.C.
- Treffgarne
- Treffgarne Bridge Quarry
- Treffgarne Hall
- Trefignath
- Trefil
- Trefin
- Trefor Quarry railway
- Trefor Richard Morgan
- Treforest Estate railway station
- Treforest railway station
- Trefriw Woollen Mills
- Tregaron Hospital
- Tregaron railway station
- Tregarth
- Tregeiriog
- Tregeiriog House, Llanishen, Monmouthshire
- Tregrug Castle
- Tregyb Woodlands
- Tregynon
- Trehafod
- Treherbert RLFC
- Treherbert railway station
- Trellech United
- Trelleck Grange
- Trelystan
- Tremadog Town Hall
- Tremeirchion
- Treorchy Male Choir
- Treorchy RFC
- Treorchy railway station
- Trerhyngyll and Maendy Halt railway station
- Tresaith
- Trethomas
- Trevelin
- Trevethin Community School
- Trevil Halt railway station
- Trevor, Wrexham
- Trevor Boyns
- Trevor Brewer
- Trevor Evans (journalist)
- Trevor Fishlock
- Trevor Hall, Denbighshire
- Trevor Jones (Welsh footballer)
- Trevor Lawless
- Trevor Llewellyn
- Trewent Point
- Trewern Hall
- Trewern United F.C.
- Treworgan Manor, Llansoy
- Trewyn Farm barn, Llanvihangel Crucorney
- Trewyn House
- Trichrug
- Tricky Nixon
- Trimsaran
- Trinity University College
- Trip Hazard: My Great British Adventure
- Trivor Farmhouse, St Maughans
- Troed-y-rhiw
- Trostrey
- Trostrey Court
- Trust PA
- Trwyn Du Lighthouse
- Tryfan Junction railway station
- Trystan Gravelle
- Trystan Owain Hughes
- Tsunami Relief Cardiff
- Tudno (electoral ward)
- Tudno FM
- Tudor Court, Penley
- Tudor Edwards
- Tudor Merchant's House
- Tudor Trader House
- Tudor poor laws
- Tudur ap Goronwy
- Tudweiliog
- Tufton, Pembrokeshire
- Tumble, Carmarthenshire
- Tumuli Shroomaroom
- Turf Hotel
- Turner House Gallery
- Twm Siôn Cati
- Twm o'r Nant
- Twmbarlwm
- Twrch Trwyth
- Twthill, Rhuddlan
- Twyn Community Centre
- Ty'n-y-bryn quarry
- Ty-Cooke Farmhouse, Mamhilad
- Ty-Hwnt-y-Bwlch Farmhouse, Cwmyoy
- Ty-asch, Mamhilad
- Ty-mawr Farmhouse, Cwmyoy
- Ty-uchaf Farmhouse, Llanelly
- Ty Bronna
- Ty Coch Cruck Barn, Llangynhafal, Denbighshire
- Ty Gwyn, Lisvane
- Ty Mawr Reservoir
- Tycroes
- Tyisha
- Tylorstown
- Tylwyth Teg
- Tynewydd, Rhondda Cynon Taf
- Tynged yr Iaith
- Tyrone Maullin
- Tyrone O'Sullivan
- Tyrrau Mawr
- Tysilio
- Tythegston
- Tywyn
- Tywyn Hospital
- Tŷ Canol Wood
- Tŷ Croes railway station
- Tŷ Mawr, Castle Caereinion
- Tŷ Mawr, Dingestow
- Tŷ Mawr Wybrnant
- Tŷ Newydd
- Tŷ Newydd Burial Chamber
- Tŷ unnos
- Uhtred (bishop of Llandaff)
- Ultra (personal rapid transit)
- Un Nos Ola Leuad
- Under Milk Wood
- Under Milk Wood (2015 film)
- Under the Driftwood Tree
- Under the Thatch
- Uned 5
- Union School of Theology
- Union dividend
- Union of Welsh Independents
- Universal Colliery
- Universities' Police Science Institute
- University of Wales, Newport
- University of Wales Institute of Science and Technology
- Untitled (Evans)
- Upper Boat
- Upper Boat Halt railway station
- Upper Boat railway station
- Upper Corris Tramway
- Upper Dyffryn House, Grosmont
- Upper Green, Llantilio Crossenny
- Upper Pengelli, Kerry (Montgomeryshire)
- Upper Pontnewydd railway station
- Upper Red House, Llanvihangel-Ystern-Llewern
- Upper Tal-y-fan, Dingestow
- Upper White Castle Farmhouse
- Upper Wye Gorge
- Upton, Pembrokeshire
- Upton Castle
- Urien Yrechwydd
- Ursula Masson
- Usk Bridge (Brecon)
- Usk Bridge (Usk)
- Usk Railway Bridge
- Usk Valley Walk
- Usk railway station (Great Western Railway)
- Uskmouth power stations
- Uvedale Corbett Junior
- Uzmaston
- Uzmaston, Boulston and Slebech
- Uí Ímair
- Vaendre Hall
- Vale Vikings
- Vale of Clwyd
- Vale of Clwyd Railway
- Vale of Glamorgan Borough Council
- Vale of Glamorgan Line
- Vale of Glamorgan Railway
- Valentine Morris
- Valerie Randle
- Valle Crucis Abbey
- Valley Cougars
- Valley Greyhound Stadium
- Valley Lines (train operating company)
- Valley Wetlands
- Valley railway station
- Valor Ecclesiasticus
- Valuation Tribunal for Wales
- Varteg railway station
- Vates
- Vaughan Gething
- Vaux Passional
- Vaynor
- Venue Cymru
- Vernon Watkins
- Veronica German
- Very Annie Mary
- Vetch Field
- Vian Bakir
- Vicki Thomas
- Victim Support
- Victoria Gardens, Neath
- Victoria Memorial Hospital
- Victoria Park, Cardiff
- Vikki Howells
- Vincent Evans (artist)
- Violet Alford
- Viral Landscapes
- Virginia Park (Caerphilly)
- Viv Woodward (Welsh footballer)
- Viva Machine
- Vivian & Sons
- Vivian Jenkins
- Vivian Naylor-Leyland
- Vivian family (baronets and barons)
- Votty & Bowydd quarry
- W. R. P. George
- W. S. Gwynn Williams
- WPA World Nine-ball Championship
- WRU Challenge Cup
- WRU Division Three North
- WRU Division Three West A
- Waenavon railway station
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- 1884 Radnor Boroughs by-election
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- 1889 Montgomeryshire County Council election
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- 1889 Welsh Cup final
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- 1891 Swansea County Borough Council election
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- 1897 East Denbighshire by-election
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- 1899 Aberdare Urban District Council election
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- 1900 Aberdare Urban District Council election
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- 1901 Aberdare Urban District Council election
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- 1907 Llandeilo Rural District Council election
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- 1995–96 Welsh Alliance League
- 1996 Rover British Clay Court Championships
- 1996–97 Cardiff City F.C. season
- 1996–97 League of Wales
- 1996–97 Welsh Alliance League
- 1997 Welsh International Open – Doubles
- 1997 Welsh International Open – Singles
- 1997 Welsh Open (snooker)
- 1997–98 FAW Premier Cup
- 1997–98 FAW Premier Cup group stage
- 1997–98 League of Wales
- 1998 Wales rugby union tour of Africa
- 1998–99 League of Wales
- 1999 United States rugby union tour of Australia and Great Britain
- 1999 Welsh Open (snooker)
- 1999–2000 League of Wales
- 1999–2000 Welsh Alliance League
- 1 and 2 Tai Cochion
- 2000 Welsh Open (snooker)
- 2000–01 League of Wales
- 2000–01 Welsh Alliance League
- 2001 Wales rugby union tour of Japan
- 2001–02 League of Wales
- 2001–02 Welsh Alliance League
- 2002 New Zealand rugby union tour of Europe
- 2002–03 Welsh Alliance League
- 2002–03 Welsh Premier League
- 2002–03 in Welsh football
- 2003 Wales rugby union tour of Australia and New Zealand
- 2003–04 Welsh Alliance League
- 2003–04 Welsh Premier League
- 2004 Isle of Anglesey County Council election
- 2004–05 Welsh Alliance League
- 2004–05 Welsh League Cup
- 2004–05 Welsh Premier League
- 2004–05 in Welsh football
- 2005 Wales Rally GB
- 2005 Wales rugby union tour of North America
- 2005–06 Swansea City A.F.C. season
- 2005–06 Welsh Alliance League
- 2005–06 Welsh League Cup
- 2005–06 Welsh Premier League
- 2005–06 in Welsh football
- 2006–07 Welsh Premier League
- 2006–07 in Welsh football
- 2007–08 Welsh League Cup
- 2008 Isle of Anglesey County Council election
- 2008–09 Welsh National League (Wrexham Area)
- 2008–09 in Welsh football
- 2009–10 Welsh Cup
- 2009–10 Welsh League Cup
- 2009–10 in Welsh football
- 2010 Speedway Grand Prix of Great Britain
- 2010 United Kingdom general election in Wales
- 2010–11 Welsh Football League Division Three
- 2010–11 Welsh Football League Division Two
- 2010–11 Welsh League Cup
- 2010–11 Welsh Premier Women's League
- 2010–11 in Welsh football
- 2011–12 Newport County A.F.C. season
- 2011–12 in Welsh football
- 2012 Autumn International Series
- 2012 Blaenau Gwent County Borough Council election
- 2012 Bridgend County Borough Council election
- 2012 Caerphilly County Borough Council election
- 2012 Flintshire County Council election
- 2012 Gwynedd Council election
- 2012 Merthyr Tydfil County Borough Council election
- 2012 Monmouthshire County Council election
- 2012 Rhondda Cynon Taf County Borough Council election
- 2012 Torfaen County Borough Council election
- 2012 Vale of Glamorgan Council election
- 2012 Wales Rally GB
- 2012 Wrexham County Borough Council election
- 2012–13 Newport County A.F.C. season
- 2013 Conference Premier play-off final
- 2013 Rugby League World Cup Group D
- 2013 Wales Rally GB
- 2013–14 FA Vase
- 2013–14 Welsh Football League Division One
- 2014–15 Newport County A.F.C. season
- 2014–15 Scarlets season
- 2014–15 Welsh Cup
- 2015–16 Welsh Cup
- 2015–16 Welsh Football League Division One
- 2016 Wales Rally GB
- 2016–17 Welsh Football League Division Two
- 2017 Carmarthenshire County Council election
- 2017 Conwy County Borough Council election
- 2017 Flintshire County Council election
- 2017 Monmouthshire County Council election
- 2017 Pembrokeshire County Council election
- 2017 Powys County Council election
- 2017 Vale of Glamorgan Council election
- 2017 in Wales
- 2017–18 Cymru Alliance
- 2018 Welsh Open (snooker)
- 2018 Women's Six Nations Championship
- 2018 in Wales
- 2018–19 Cymru Alliance
- 2020–21 Ardal NE
- 2020–21 Ardal NW
- 2020–21 Ardal SE
- 2020–21 Ardal SW
- 2020–21 Cymru South
- 2021 Welsh Conservatives leadership election
- 2021–22 Cymru Premier
- 2021–22 Cymru South
- 2021–22 Indigo Group Premiership
- 2021–22 WRU Championship
- 2022 Flintshire County Council election
- 2022–23 Wrexham A.F.C. season
- 2023 British Cycling National Track Championships
- 2023–24 Adran Premier
- 2023–24 Adran Trophy
- 216 Cardiff–Bristol Airport
- 3SL
- 9Bach
- A4055 road
- A4109 road
- A4113 road
- A4136 road
- A4234 road
- A468 road
- A469 road
- A476 road
- A478 road
- A486 road
- A489 road
- A490 road
- A499 road
- A541 road
- A Tour in Scotland, 1769
- Aaron Aby
- Aaron James (English footballer)
- Aaron Shingler
- Abbas Farid
- Abbeycwmhir
- Abel Hayes
- Abel Hughes
- Aber, Ceredigion
- Aber-arad
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- Aber Bargoed railway station
- Aber Dinlle Fault
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- Aber Village
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- Aberaeron Hospital
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- Aberafan Centre
- Aberafan Maesteg (UK Parliament constituency)
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- Aberaman railway station
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- Aberarth
- Aberarth – Carreg Wylan
- Aberavon Seaside railway station
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- Aberbanc
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- Aberbechan
- Aberbeeg railway station
- Aberbowlan
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- Aberbrân
- Abercamlais railway station
- Abercanaid railway station
- Abercarn RFC
- Abercarn United A.F.C.
- Abercegir
- Abercrave railway station
- Abercriban Quarries
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- Abercwmboi Halt railway station
- Abercwmboi RFC
- Abercynon North railway station
- Abercynon RFC
- Aberdare Golf Club
- Aberdare High School
- Aberdare Low Level railway station
- Aberdare Park
- Aberdare Town F.C.
- Aberderfyn Halt railway station
- Aberdesach
- Aberdylais Halt railway station
- Aberedw
- Aberedw railway station
- Abererch
- Aberfan railway station
- Aberffraw (cantref)
- Aberffrwd, Ceredigion
- Aberffrwd, Monmouthshire
- Aberffrwd railway station
- Abergarw
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- Abergavenny fireworks display
- Abergeirw
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- Abergwesyn
- Abergwili (electoral ward)
- Abergwili railway station
- Abergwydol
- Abergwynfi
- Abergwynfi railway station
- Aberhafesp
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- Abermenai Point
- Abermeurig
- Abermule
- Abermule A.F.C.
- Abermule with Llandyssil
- Abernant, Carmarthenshire
- Abernant, Powys
- Abernant railway station
- Aberoer
- Aberpergwm
- Abersoch Golf Club
- Abersychan Low Level railway station
- Abersychan School
- Abertafol railway station
- Aberthaw High Level railway station
- Aberthaw Low Level railway station
- Aberthin Platform railway station
- Abertillery Learning Community
- Abertillery and District Hospital
- Abertridwr, Caerphilly
- Abertridwr, Powys
- Abertridwr railway station
- Abertrinant
- Abertysswg railway station
- Aberwheeler
- Aberyscir
- Aberystwyth League
- Aberystwyth Rural District
- Aberystwyth Times
- Aberystwyth University Ceramics Collection
- Aberystwyth University F.C.
- Abraham (Bishop of St Davids)
- Acrefair
- Acrefair railway station
- Active Travel (Wales) Act 2013
- Adam Buick
- Adam Jones (referee)
- Adam Lively
- Adam Ottley
- Adam Street railway station
- Adam Thomas (rugby union)
- Adam the Welshman
- Adamsdown Primary School
- Adda Fras
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- Adfa, Powys
- Admiral Rodney's Pillar
- Adpar
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- Adwen
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- Aethwy Rural District
- Afallach
- Afon Aber
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- Afon Llynfi (Wye)
- Afon Marlais, Carmarthenshire
- Afon Marlas
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- Afon Rhythallt
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- Afon Soch
- Afon Tafolog
- Afon Tarell
- Afon Twrch, Carmarthenshire
- Afon Twymyn
- Afon Wyre
- Afon Ysgethin
- Afon Ysgir
- Afon y Maes
- Afonwen
- Agricultural Advisory Panel for Wales
- Agricultural Land Classification
- Aileen Richards
- Aithnen
- Alabum
- Alan Alan
- Alan Edmunds
- Alan Edwards (rugby)
- Alan Jarvis
- Alan Jevons
- Alan Jones (footballer, born 1939)
- Alan Reynolds (rugby union)
- Alan Simons
- Alan Williams (Carmarthen MP)
- Alasdair Whittle
- Alban Thomas
- Albert Freethy
- Albert Gladstone
- Albert Gower-Rees
- Albert Hawkins
- Albert Jones (footballer, born 1883)
- Albert Lewis (priest)
- Albert Lockley
- Albert Love
- Albert Parry
- Albert Pryce-Jones
- Albert Thomas Davies
- Albert Wardell
- Albert Young (footballer)
- Alberta Place Halt railway station
- Albion Rovers F.C. (Newport)
- Aldred Williams
- Aled Gravelle
- Aled Hall
- Aled Owen
- Aled Wyn Davies
- Alex Cuthbert
- Alex Finlayson (rugby union)
- Alex Givvons
- Alex Gough (squash player)
- Alex Jones (rugby league)
- Alex Mann (rugby union)
- Alexander Griffith
- Alexander Hunter (footballer)
- Alf Davies
- Alfred Ernest Watkins
- Alfred Francis
- Alfred Lewis Jones
- Alfred Oliver
- Alfred Owen Davies
- Alfred Townsend
- Algy Thomas
- Ali Loke
- Alice Springs Golf Club
- Alis Wen
- All Nations Centre
- All Under One Banner Cymru
- Allan Garraway
- Allen's of Tenby
- Allen Price
- Allt-fawr
- Allt-y-Main
- Allt Cynhelyg
- Allt Ddu Formation
- Allt Lwyd
- Allt Penycoed Stream Section
- Allt Pontfaen - Coed Gelli-fawr
- Allt y Benglog National Nature Reserve
- Alltddu Halt railway station
- Alltmawr
- Alltwalis Wind Farm
- Alltyblacca
- Alt-y-Graig railway station
- Alun Carter
- Alun Davies (historian)
- Alun Davies (priest)
- Alun Davies (rugby union)
- Alun Donovan
- Alun Evans (priest)
- Alun Hawkins
- Alun Herbert Davies
- Alun Lawrence
- Alun Pask
- Alun Priday
- Alun Pugh
- Alun Tan Lan
- Alun Wyn Davies
- Alyn Gorge
- Alyn Valley Woods and Alyn Gorge Caves
- Alyn Waters
- Alys Conran
- Alys Williams (singer)
- Ambrose Mason
- Amddiffynydd yr Eglwys
- Amelia Ritchie
- Amenity society
- Amlwch Port
- Amlwch railway station
- Ammanford (electoral ward)
- Ammanford Colliery Halt railway station
- Ammanford railway station (GWR)
- Ammanford transmitting station
- Amober
- Amroth (electoral ward)
- Amser Te
- Amy Guy
- Amy Williams (bowls)
- An Overshot Mill in Aberdulais, Wales
- Anafon River
- Andres Jones
- Andrew Brereton
- Andrew Davies (weightlifter)
- Andrew Fleming (bowls)
- Andrew House
- Andrew Jones (priest)
- Andrew Matthews-Owen
- Andrew Morris (gymnast)
- Andrew Morris (priest)
- Andrew Phillips (priest)
- Andrew Rowell
- Andy Allen (rugby union)
- Andy Booth (rugby union)
- Andy Edwards (footballer, born 1965)
- Andy Grimwood
- Andy Herrick
- Andy Marinos
- Anebolithus
- Aneirin Talfan Davies
- Aneurin Hughes
- Aneurin Livermore
- Aneurin Owen (rugby union)
- Aneurin Richards
- Angel Romaeo
- Angharad Price
- Angharad ferch Llywelyn
- Angharad ferch Meurig
- Anglesey Coalfield
- Anglesey League
- Anglesey Mining
- Anian II (bishop of St Asaph)
- Anian I (bishop of St Asaph)
- Ankst
- Ann Dainton
- Ann Davies (politician)
- Ann Harriet Hughes
- Anna Thomas (comedian)
- Anne Adams
- Anne Beauchamp, 15th Countess of Warwick
- Anneliese Heard
- Annie Davies
- Annie Foulkes
- Annie Powell
- Anoma Sooriyaarachchi
- Ansel Marshal
- Anthony Hulme
- Anthony Jones (priest)
- Anthony Morgan of Marshfield and Casebuchan
- Anthony O'Donnell (actor)
- Anthony Pierce
- Ar Lan y Môr
- Aran Benllyn
- Aran Volcanic Group
- Arash Amel
- Archibald Lush
- Archie Bastock
- Archie Hughes (rugby union)
- Archives Wales
- Ardal North Cup
- Ardal South Cup
- Arddleen
- Arenig Fawr South Ridge Top
- Arenig Fawr South Top
- Arenig railway station
- Arfon Gwilym
- Arfon Haines Davies
- Arfon Williams
- Arfordir Abereiddi
- Arfordir Gogleddol Penmon
- Argoed, Caerphilly
- Argoed, Flintshire
- Argoed, Powys
- Argoed railway station
- Arise Evans
- Armorial of local councils in Wales
- Arnold Butler
- Arofan
- Aron ap Rhys
- Arowry
- Arthen ap Seisyll
- Arthog
- Arthog railway station
- Arthur Bulkeley
- Arthur Daniels
- Arthur Davies (footballer)
- Arthur Drabble
- Arthur Evanson
- Arthur Green (Welsh footballer)
- Arthur Griffiths (cyclist)
- Arthur Hickman
- Arthur Howard Williams
- Arthur Hughes (Welsh footballer)
- Arthur Jones (footballer, born 1912)
- Arthur Kelton
- Arthur Lloyd (Welsh footballer)
- Arthur Lloyd (rugby league)
- Arthur Smith (Welsh footballer)
- Arts Connect
- Arwel Richards
- Arwel Thomas
- Asbri
- Ashley Griffiths
- Ashley Sweet
- Ashley Williams (boxer)
- Ashton Hewitt
- Ashvale, Blaenau Gwent
- Association of Welsh Translators and Interpreters
- Aston Park, Flintshire
- Atgof o'r Sêr
- Athraw
- Aubrey Hill (cricketer)
- Audience Council Wales
- Audrey Bates
- Augustus Buckland
- Austin Savage (field hockey)
- Avon Inflatables
- B4319 road
- B4518 road
- BAFTA Cymru
- BBC Cymru Fyw
- BBC One Wales
- BT Tower (Swansea)
- Babel, Carmarthenshire
- Babell
- Bachau
- Bache Hill
- Backe, Carmarthenshire
- Badger Face Welsh Mountain sheep
- Bagillt railway station
- Baglan Dragons F.C.
- Baglan Sands Halt railway station
- Baháʼí Faith in Wales
- Bala (Penybont) railway station
- Bala Fault
- Baldwin de Boulers
- Baldwins Halt railway station
- Banc-y-Warren
- Banc-y-môr
- Banc Bugeilyn
- Banc y Mwldan
- Bancyfelin
- Bandit (TV series)
- Baner ac Amserau Cymru
- Baner y Groes
- Baneswell
- Bangor-on-Dee railway station
- Bangor Aberconwy (UK Parliament constituency)
- Bangor Teifi
- Bangor University F.C.
- Bank of Wales
- Bank of Williams and Rowland
- Barbara Margaret Trimble
- Bardsey Bird and Field Observatory
- Bargoed railway station
- Barmouth & Dyffryn United F.C.
- Barmouth Bay
- Barnardtown
- Baron Mostyn
- Baron of Cymmer-yn-Edeirnion
- Barrack Hill
- Barrie Evans
- Barry (UK Parliament constituency)
- Barry Clegg (rugby union)
- Barry College
- Barry Hospital
- Barry Metcalf (cricketer)
- Barry Pier railway station
- Bassaleg School
- Bastion Road
- Bathafarn
- Battle, Powys
- Battle of Aberconwy
- Battle of Bron yr Erw
- Battle of Bryn Derwin
- Battle of Cefn Digoll
- Battle of Hereford
- Battle of Llandeilo Fawr
- Battle of Mechain
- Battle of Pencon
- Battle of Rhyd Y Groes
- Battle of Tuthill
- Bausley with Criggion
- Baynham Hall
- Beacon Hill, Powys
- Beag Fair Siding railway station
- Beaufort Theatre
- Beaumaris Town F.C.
- Beaver's Hill Halt railway station
- Bedd Arthur
- Bedd Taliesin
- Beddau
- Beddau Halt railway station
- Beddgelert Fault
- Beddgeraint
- Bedlinog
- Bedlinog railway station
- Bedo Aeddren
- Bedo Brwynllys
- Bedo Hafesp
- Bedo Phylip Bach
- Bedwas Workmen's Hall
- Bedwas railway station
- Bedwellty (UK Parliament constituency)
- Bedwellty Greyhound Track
- Bedwyr Lewis Jones
- Beechwood, Newport
- Befis
- Beggar's Bush, Powys
- Belan, Powys
- Beli ab Eiludd
- Belle Vue, Rhyl
- Belonging (TV series)
- Ben Addis
- Ben Cambriani
- Ben Carter (rugby union)
- Ben Castle (rugby union)
- Ben Davies (Independent minister and author)
- Ben Davies (poet)
- Ben Jones (rugby union, born 1998)
- Ben Lake
- Ben Platt (cricketer)
- Ben Thomas (rugby union)
- Benjamin Alec Lewis
- Benjamin Davies (Hebraist)
- Benjamin Jones-Perrott
- Benlli
- Benton Fault
- Bera Bach
- Bera Mawr
- Bernard Knight
- Bernard Thomas
- Berriew F.C.
- Bert Cronin
- Bert Lumberg
- Bert Williams (footballer, born 1905)
- Berthyfedwen
- Bertie Lewis (priest)
- Bertram Hughes
- Berw Fault
- Berw Road Halt railway station
- Berwig Halt railway station
- Berwyn, Denbighshire
- Berwyn Rangers F.C.
- Berwyn railway station
- Beryl Hughes
- Bethan Ellis Owen
- Bethan Witcomb
- Bethania, Ceredigion
- Bethania Chapel, Aberdare
- Bethesda Urban District
- Bethesda branch line
- Bethesda railway station
- Bethlehem, Carmarthenshire
- Betsan Llwyd
- Bettisfield
- Bettws Cedewain
- Bettws RFC
- Betty Gray
- Betty Morgan (politician)
- Betws, Carmarthenshire (electoral ward)
- Betws-y-Coed F.C.
- Betws Bledrws
- Betws Garmon
- Betws Gwerfil Goch
- Betws Ifan
- Betws yn Rhos
- Beulah, Ceredigion
- Beulah, Powys
- Beulah Halt railway station
- Bickerton Edwards
- Bidofydd
- Big Pit Halt railway station
- Big Pool Wood
- Bigyn (electoral ward)
- Bill Evans (rugby union)
- Bill Johnson (rugby league)
- Bill Lanyon
- Bill Morgan (rugby)
- Bill Perry (rugby union)
- Bill Sweet
- Bill Thomas (priest)
- Billy Bassett (Welsh footballer)
- Billy Hole
- Billy Hughes (footballer, born 1865)
- Billy Matthews (footballer, born 1883)
- Billy Matthews (footballer, born 1897)
- Billy Mays (footballer)
- Billy Poyntz
- Billy Richards (footballer, born 1905)
- Billy Thomas (rugby league)
- Billy Thomas (rugby union)
- Billy Watkins (rugby union)
- Billy Williams (footballer, born 1896)
- Birchgrove, Cardiff
- Bishop's Wood
- Bishop's messenger
- Bishop Hedley High School
- Bishop Vaughan Catholic School
- Bishop of Llandaff Church in Wales High School
- Bishop of Penrydd
- Bishop of Swansea
- Bishops Castle Town F.C.
- Bishops Town
- Bishpool
- Black Lion Crossing Halt railway station
- Black Mixen
- Black Mountain South Top
- Black Rock Halt railway station
- Blackmill railway station
- Blackpill railway station
- Blackwood Bulldogs
- Blaen-geuffordd
- Blaen-pant
- Blaen-y-Maes
- Blaen-y-glyn
- Blaen Celyn
- Blaenau Gwent and Rhymney (UK Parliament constituency)
- Blaenavon Low Level railway station
- Blaenbedw Fawr
- Blaenborthyn
- Blaencediw Formation
- Blaendare Road Halt railway station
- Blaengarw railway station
- Blaengwawr Comprehensive School
- Blaengwynfi
- Blaenhonddan
- Blaenllechau
- Blaenplwyf
- Blaenrheidol
- Blaenrhondda Road Cutting
- Blaenrhondda railway station
- Blaenycoed
- Blaina & District Hospital
- Bleddfa
- Bleddyn Ddu
- Bleddyn Fardd
- Bleddyn Jones
- Bledri
- Bleiddwn
- Blodau Yr Oes
- Blodau cerdd
- Blue Pool Bay
- Boating Lake Park
- Bob Colville
- Bob Delyn a'r Ebillion
- Bob Griffiths (priest)
- Bob Kennard
- Bob Lock
- Bob Pugh
- Bob Shaw (athlete)
- Bobby Jones (rugby union)
- Bod Deiniol Formation
- Bodeidda Mudstone
- Bodewryd
- Bodfach
- Bodfari
- Bodfari railway station
- Bodferin
- Bodffordd
- Bodlondeb Woods
- Boduan
- Bodwyn
- Bon-y-maen
- Boncath railway station
- Bonedd y Saint
- Bont Dolgadfan
- Bont F.C.
- Bont Fawr
- Bont Goch
- Bont Newydd railway station
- Bontddu
- Bontnewydd, Ceredigion
- Bontnewydd, Gwynedd
- Bontnewydd railway station
- Bontuchel
- Bonwm Halt railway station
- Bonymaen Broncos
- Book of Aneirin
- Book of Cynog
- Borras Park
- Borras Park Albion F.C.
- Borth United F.C.
- Borth railway station
- Borthwnog
- Bosherston Lakes
- Boss Brewing
- Botany Bay, Monmouthshire
- Botwnnog
- Boughrood
- Boughrood & Llyswen railway station
- Boughrood Brest
- Bow Street railway station
- Boyd Clack
- Boyo James
- Bracelet Bay
- Bradley Park Rangers F.C.
- Bragod
- Braint
- Brandy Cove
- Brandy Hill, Wales
- Branwen (film)
- Branwen Gwyn
- Breaksea Point
- Brechfa Forest Wind Farm
- Brecknock Hill Cheviot
- Brecknock Rural District
- Brecknock Society and Museum Friends
- Brecon, Radnor and Cwm Tawe (UK Parliament constituency)
- Brecon Buff Goose
- Breidden railway station
- Bretton Bridge
- Bretton Hall, Flintshire
- Brian Cresswell
- Brian Davies (rugby union)
- Brian James (priest)
- Brian Jarvis
- Brian Jones (rugby union)
- Brian Lewis (cricketer)
- Brian Rees
- Bridge End Inn
- Bridge FM (Wales)
- Bridgend Industrial Estate
- Bridgend railway station (L&OG)
- Bristol Channel Fault Zone
- Brithdir, Caerphilly
- Brithdir, Ceredigion
- Brithdir, Gwynedd
- Brithdir, Powys
- Brithdir and Llanfachreth
- Brithdir railway station
- British Association of International Mountain Leaders
- British Coastal Deposits Group
- British Rhondda Halt railway station
- British Steel (Port Talbot) Golf Club
- Briton Ferry Athletic F.C.
- Briton Ferry East railway station
- Briton Ferry Llansawel A.F.C.
- Briton Ferry RFC
- Briton Ferry Road railway station
- Briton Ferry West railway station
- Bro Aberffraw
- Bro Cernyw F.C.
- Bro Garmon
- Bro Goronwy F.C.
- Broad Oak and Thornhill Meadows
- Broad Water
- Broadfield, Pembrokeshire
- Brockweir Halt railway station
- Broginin
- Bronaber
- Bronant
- Brondyffryn Trust
- Brongest
- Bronglais Hospital
- Brongwyn
- Bronington
- Bronnant Fault
- Bronydd Formation
- Brook Street Halt railway station
- Broughton, Vale of Glamorgan
- Broughton & Bretton railway station
- Broughton Hall, Flintshire
- Broughton and Bretton
- Brown Lenox & Co Ltd
- Brut y Saeson
- Bryan D. White
- Bryan Richards
- Bryan Williams (priest)
- Brymbo West Crossing Halt railway station
- Brymbo railway station (Great Central Railway)
- Brymbo railway station (Great Western Railway)
- Bryn, Llanelli
- Bryn-Celynog Halt railway station
- Bryn Alyn
- Bryn Cader Faner
- Bryn Celyn
- Bryn Celynnog Comprehensive School
- Bryn Day
- Bryn Du
- Bryn Eryr
- Bryn Euryn
- Bryn Hafod
- Bryn Hynod Halt railway station
- Bryn Offa
- Bryn Rovers A.F.C.
- Bryn Siltstone
- Bryn railway station (Glamorgan)
- Bryn yr Ŵyn
- Brynafan
- Brynamman East railway station
- Brynamman West railway station
- Bryncarnau Grasslands, Llwydcoed
- Bryncethin
- Bryncoch
- Bryncoch North
- Bryncroes
- Bryncrug
- Bryndioddef-isaf
- Bryneglwys
- Bryneglwys Fault
- Brynford
- Bryngolau
- Bryngwran Bulls F.C.
- Bryngwyn
- Bryngwyn, Ceredigion
- Bryngwyn Comprehensive School
- Bryngwyn Halt railway station
- Brynhoffnant
- Brynhyfryd, Swansea
- Brynkir railway station
- Brynmawr Foundation School
- Brynmawr Urban District
- Brynmenyn railway station
- Brynmill railway station
- Brynna a Wern Tarw
- Brynsadler
- Bryntail lead mine
- Brynteg, Anglesey
- Brynteg, Wrexham
- Bryn–bach, Cefn Cribwr
- Buckland Coach House & Ice House
- Buckley Claypits and Commons
- Builth Volcanic
- Builth Wells F.C.
- Builth Wells RFC
- Builth Wells Urban District
- Builth Wells railway station
- Bull Bay, Anglesey
- Bulmore
- Burgedin
- Burrium
- Burry Holms
- Burry Inlet and Loughor Estuary
- Burry Port (electoral ward)
- Burry Port RFC
- Burry Port railway station
- Burton's, Abergavenny
- Burton, Wrexham
- Burton (Pembrokeshire electoral ward)
- Burwen
- Bute Dock Police
- Bute Town
- Butetown railway station
- Buttington
- Buttington railway station
- Bwlch-y-cibau
- Bwlchyfadfa
- Bwletin Cymdeithas Emynau Cymru
- Bwrdd Arthur
- Bye-gones
- Bylchau
- Bynea
- Bynea railway station
- C.P.D. Caer Clwyd
- C.P.D. Gwalchmai
- C.P.D. Y Rhyl 1879
- C.P.D. Yr Wyddgrug
- CEWC-Cymru
- CF99
- CK Swiss Valley A.F.C.
- CWFA Challenge Cup
- Cadair Bronwen
- Cadair Ifan Goch
- Cadell Ddyrnllwg
- Cadell ap Brochfael
- Cadell ap Rhodri
- Cader
- Cadfarch
- Cadoxton, Vale of Glamorgan
- Cadoxton Terrace Halt railway station
- Cadwalader's Ice Cream
- Cadwalader Hughes
- Cadwaladr Cesail
- Cadwaladr Price
- Cadwaladr ap Rhys Trefnant
- Cadwgan Delynor
- Cadwgan Ffôl
- Cadwgan ab Owain
- Cadwgan ap Meurig
- Cae-y-Castell
- Cae Blaen-dyffryn
- Cae Cilmaenllwyd
- Cae Cwm-tywyll
- Cae Gwernllertai
- Cae Gwyn SSSI
- Cae Gwynfryn
- Cae Maes-y-ffynnon
- Caeathro
- Caeau Afon Gwili
- Caeau Blaen-yr-Orfa
- Caeau Blaenau-mawr
- Caeau Bronydd-mawr
- Caeau Capel Hendre
- Caeau Caradog
- Caeau Cefn Cribwr
- Caeau Cnwch a Ty'n-y-graig
- Caeau Heol y Llidiart-coch
- Caeau Llety-cybi
- Caeau Nant Garenig
- Caeau Nant y Llechau
- Caeau Nantsais
- Caeau Pen-y-coed
- Caeau Rhyd-y-gwiail
- Caeau Tir-mawr
- Caeau Ty'n-llwyni
- Caegarw
- Caehopkin
- Caemawr Greyhound Stadium
- Caer Gybi (fort)
- Caer Sidi
- Caerau, Anglesey
- Caerau, Bridgend
- Caerau railway station
- Caereinion
- Caerfarchell
- Caergeiliog
- Caerleon Bridge
- Caerleon Tramroad
- Caerleon Urban District
- Caernarfon Airworld Aviation Museum
- Caernarfon Bay
- Caerphilly District Miners Hospital
- Caerphilly F.C.
- Caerphilly Golf Club
- Caersws Roman Forts
- Caerwedros
- Caerwedros (commote)
- Caerwys Rectory
- Caerwys Tufa
- Caerwys railway station
- Cafnan
- Cai Evans
- Caim, Anglesey
- Caio, Carmarthenshire
- Calan (band)
- Calcoed
- Caldicot Hundred
- Caledonia Glacigenic Group
- Calendar of saints (Church in Wales)
- Callum Carson
- Callum Taylor (Welsh cricketer)
- Callum Williams
- Calvert Jones
- Cambria (journal)
- Cambrian Caving Council
- Cambrian Law Review
- Camddwr
- Camddwr, Teifi
- Cameleon (film)
- Cameron Evans
- Cameron Herring
- Cameron Winnett
- Cameron Wright (weapons scientist)
- Camnant Mudstone
- Canolbarth Môn
- Canovium
- Canton F.C.
- Cantonian High School
- Cantref Llŷn
- Cantref Mawr
- Capel Bangor
- Capel Betws Lleucu
- Capel Celyn Halt railway station
- Capel Coch
- Capel Dewi, Carmarthenshire
- Capel Dewi, Faenor
- Capel Dewi, Llandysul
- Capel Garmon
- Capel Gwyn
- Capel Mawr
- Capel Parc
- Capel Salem, Pwllheli
- Capel Tygwydd
- Capel Y Crwys
- Capital Cymru
- Capitol Theatre, Cardiff
- Caradog (Griffith Rhys Jones)
- Caradog Falls Halt railway station
- Cardiff (UK Parliament constituency)
- Cardiff Arena
- Cardiff Bay Retail Park
- Cardiff Celts
- Cardiff Celts Volleyball Club
- Cardiff City F.C. (women)
- Cardiff Crockherbtown railway station
- Cardiff Draconians F.C.
- Cardiff Film Festival
- Cardiff Horse Show
- Cardiff Huskies
- Cardiff Marathon
- Cardiff North West (UK Parliament constituency)
- Cardiff Parkrun
- Cardiff Parkway railway station
- Cardiff RLFC
- Cardiff Reform Synagogue
- Cardiff Riverside Branch
- Cardiff Sevens
- Cardiff South (UK Parliament constituency)
- Cardiff South East (UK Parliament constituency)
- Cardiff and Vale College
- Cardiff–Newport metropolitan area
- Cardigan County School
- Cardinal Newman Roman Catholic School, Rhydyfelin
- Cardonnel Halt railway station
- Cariad Cywir
- Carissa Turner
- Carlyle Witton-Davies
- Carmarthen Cemetery Chapel
- Carmarthen Grammar School
- Carmarthen Group
- Carmarthen Journal
- Carmarthen Park
- Carmarthen Public Rooms
- Carmarthen Quins RFC
- Carmarthen Rural District
- Carmarthen Weekly Reporter
- Carmarthenshire (UK Parliament constituency)
- Carmarthenshire County Museum
- Carmel, Anglesey
- Carmel, Carmarthenshire
- Carmel, Flintshire
- Carmel, Gwynedd
- Carmel Head
- Carmel Head Thrust
- Carn Fadryn
- Carn Gafallt
- Carn Ingli
- Carnarvon Ironopolis F.C.
- Carnedd Iago Formation
- Carnedd Llechwedd-llyfn
- Carnedd y Ddelw
- Carnedd y Filiast (Cerrigydrudion)
- Carnedd y Filiast (Glyderau)
- Carnetown
- Carnguwch
- Carno
- Carol Evans
- Caroline, Lady Wilkinson
- Carreg Cennan
- Carreg Coetan Arthur
- Carreg yr Imbill
- Carreghofa
- Carreghofa Halt railway station
- Carreglefn
- Carrick McDonough
- Carrog
- Carrog, Anglesey
- Carrog railway station
- Carway
- Carwyn Ellis
- Carwyn Jones (rugby union)
- Carwyn Penny
- Carwyn Tuipulotu
- Caryl Parry Jones
- Carys Parry
- Carys Phillips
- Cascob
- Casnodyn
- Cassia Pike
- Castell Cawr
- Castell Deudraeth
- Castell Madoc
- Castell y Gwynt
- Castle Caereinion railway station
- Castle Cinema
- Castle Farmhouse, St Georges-super-Ely
- Castle Hill, Ceredigion
- Castle Hotel, Aberaeron
- Castle House, Laugharne
- Castle Park, Caerphilly
- Castlebythe Halt railway station
- Castlemartin Corse
- Castleton, Newport
- Cat's Ash
- Catbrook
- Cathays Methodist Church
- Cathedral Road, Cardiff
- Catherine Fookes
- Catherine Prichard
- Cathinog Hundred
- Cathy Dawson
- Catnic
- Catrin Jones
- Catrin ferch Owain Glyndŵr
- Cayo Hundred
- Cebur
- Cecil Smith (footballer, born 1904)
- Ceffyl Dŵr
- Ceffyl Pren
- Cefn, Wrexham
- Cefn-cerig road
- Cefn-y-Llwyd
- Cefn-y-bedd
- Cefn Caves
- Cefn Coch
- Cefn Coed Colliery Halt railway station
- Cefn Coed railway station
- Cefn Cribwr F.C.
- Cefn Croes Wind Farm
- Cefn Fforest
- Cefn Glas
- Cefn Gwlad
- Cefn Gwyntog
- Cefn Hengoed
- Cefn Hengoed, Swansea
- Cefn Llechid
- Cefn Mably House
- Cefn Meadow
- Cefn Rhigos
- Cefn railway station
- Cefn yr Ogof
- Cefnddwysarn
- Cefneithin
- Cefntilla Halt railway station
- Ceibwr Bay Fault
- Ceidio
- Ceint railway station
- Ceiriog Rural District
- Ceiswyn Formation
- Ceitho
- Celtic Blue Rock Community Arts Festival
- Celtic Trail cycle route
- Celtic Weekly Newspapers
- Celtic rainforest
- Celynen North Halt railway station
- Cemais (Anglesey)
- Cemlyn
- Cemmaes
- Cemmaes Road
- Cenarth Falls
- Ceneu
- Cennad
- Cennych
- Cennydd Traherne
- Central Wales Football League
- Central Wales Lineament
- Cephalonian method
- Cerddor y Tonic Sol-ffa
- Ceredigion (journal)
- Ceredigion Historical Society
- Ceredigion League
- Ceredigion Museum
- Ceredigion Preseli (UK Parliament constituency)
- Ceri Dallimore
- Ceri Holland
- Ceri Sherlock
- Cerist railway station
- Cernydd Carmel
- Cerrig Mân
- Cerrigceinwen
- Cestyll Garden
- Ceulanamaesmawr
- Ceunant Cynfal National Nature Reserve
- Ceunant Llennyrch National Nature Reserve
- Champion Beer of Wales
- Chancery, Ceredigion
- Change, Grow, Live
- Charles Cecil (bishop)
- Charles Coltman-Rogers
- Charles Conde
- Charles Dale
- Charles Davies (Baptist minister)
- Charles Edwards (footballer)
- Charles Griffith (priest)
- Charles Horace Watkins
- Charles Kemeys-Tynte, 8th Baron Wharton
- Charles Ketley
- Charles Lawrence, 2nd Baron Trevethin
- Charles Lewis (priest)
- Charles Norris (etcher)
- Charles Prestwood Lucas
- Charles Price (Welsh politician)
- Charles Roberts (priest)
- Charles Thomas (footballer)
- Charlie Caton
- Charlie Dyke
- Charlie Estcourt
- Charlie Faulkner
- Charlie Smith (footballer)
- Charlotte Williams-Wynn (aristocrat)
- Charlotte Wingfield
- Charubel
- Che Hope
- Cheetah Marketing
- Chelsea Lewis (netball)
- Chem Campbell
- Chepstow Rural District
- Chief Coroner of England and Wales
- Chirk AAA F.C.
- Chirk Rural District
- Chirk Town F.C.
- Chirkland
- Chloe Bull
- Chloe Chivers
- Chloé Tutton
- Chris Birch (stroke survivor)
- Chris Bridges
- Chris Davies (Conservative politician)
- Chris Fry (footballer)
- Chris Potter (priest)
- Chris Riley (Welsh footballer)
- Chris Smith (priest)
- Chris Stephens (rugby union)
- Chris Venables
- Chris Wells (curler)
- Christ Church, Bala
- Christ Church, Carmarthen
- Christ Church, Radyr
- Christ College, Brecon
- Christian Purslow
- Christina Booth
- Christine Evans
- Christine Humphreys
- Christopher Flynn
- Christopher Gwynne Lewis
- Christopher Mends
- Christopher Salmon
- Church Village Halt railway station
- Church of St Michael and All Angels, Forden
- Churchstoke F.C.
- Chwalfa
- Chwarel Pant Glas
- Chwarel Singret
- Chwilog railway station
- Cil-y-groeslwyd Woods, Eyarth Woods & Rocks & Craig Adwy-wynt
- Cilcain Hall
- Cilcennin
- Cilfrew railway station
- Cilfynydd railway station
- Ciliau Aeron
- Cilmeri
- Cilmeri railway station
- Cilycwm
- Cilycwm (electoral ward)
- Cim, Caernarfonshire
- Cissy Davies
- City, Vale of Glamorgan
- Civic Trust for Wales
- Civil Aid Voluntary Rescue Association
- Claerwen
- Claerwen Fault
- Claire Evans
- Claire Summers
- Clarach Bay
- Clarence Road railway station
- Clarenceux King of Arms
- Clark Shiels
- Clase
- Clatter, Powys
- Clawdd Poncen
- Clawddnewydd
- Clayton Thomas
- Cledan Mears
- Cliff Lloyd
- Cliff Williams (rugby, born 1939)
- Cliff Wood – Golden Stairs
- Clifford Dyment
- Clifford Lloyd
- Clipyn Du
- Clocaenog
- Clogau Quarry
- Cloten of Dyfed and Brycheiniog
- Cloy Brook Pastures
- Cloy Halt railway station
- Clwyd-Powys Archaeological Trust
- Clwyd County Council
- Clwyd East (UK Parliament constituency)
- Clwyd North (UK Parliament constituency)
- Clwyd North West (UK Parliament constituency)
- Clydach-on-Tawe railway station
- Clydach (electoral ward)
- Clydach Court Halt railway station
- Clydau (electoral ward)
- Clydwyn
- Clyne, Neath Port Talbot
- Clyne Halt railway station
- Clyro
- Clytha
- Clywedog Trail
- Cnap Twt
- Cneppyn Gwerthrynion
- Cnicht
- Cnicht North Top
- Coal Face
- Cochwillan
- Cockshead
- Coed-Ely
- Coed-y-Cerrig National Nature Reserve
- Coed-y-bryn
- Coed-y-paen
- Coed Camlyn National Nature Reserve
- Coed Cwm Clettwr
- Coed Cymerau National Nature Reserve
- Coed Dolgarrog National Nature Reserve
- Coed Ely railway station
- Coed Eva
- Coed Ganllwyd National Nature Reserve
- Coed Gorswen National Nature Reserve
- Coed Gwempa
- Coed Llandyfan
- Coed Morgan
- Coed Nant Menascin
- Coed Poeth railway station
- Coed Rheidol National Nature Reserve
- Coed Talon
- Coed Talon Marsh
- Coed Talon railway station
- Coed Tremadog National Nature Reserve
- Coed y Bwl
- Coed y Ciliau
- Coed y Crychydd
- Coed y Garth, Ceredigion
- Coed y Gopa
- Coed y Rhygen National Nature Reserve
- Coedana
- Coedcae School
- Coedffranc
- Coedffranc Central
- Coedkernew
- Coedmor National Nature Reserve
- Coedpenmaen
- Coedpenmaen railway station
- Coedydd Aber National Nature Reserve
- Coedydd Capel Dyddgen
- Coedydd Dyffryn Alwen
- Coedydd Maentwrog National Nature Reserve
- Coedydd y Garn
- Coedyfoel
- Coedymwstwr Woodlands
- Coelbren, Powys
- Coetan Arthur
- Coetmor
- Cog Moors
- Cold Knap
- Coldra
- Coleford railway station
- Coleg Ceredigion
- Coleg Elidyr
- Coleg Gwent
- Coleg Harlech
- Coleg Meirion-Dwyfor
- Coleg Menai
- Coleg Morgannwg
- Coleg Powys
- Coleshill, Flintshire
- Colin Jones (boxer)
- Colin Standing
- Colin Treharne
- Coliseum Theatre (Aberdare)
- Colston, Pembrokeshire
- Colwyn Castle
- Colwyn Rural District
- Coming Home (British TV series)
- Coming Up Roses (1986 film)
- Comins Coch
- Commercial Street Platform railway station
- Commins, Denbighshire
- Commins Coch
- Commins Coch Halt railway station
- Commissioner for Older People (Wales) Act 2006
- Compendium Competorum
- Compurgation
- Connah's Quay High School
- Connah's Quay Ponds and Woodland
- Connah's Quay Town Football Club
- Connah's Quay railway station
- Connor Brown (cricketer)
- Connor Edwards
- Connor Farrer
- Contention of the Bards in Gwynedd
- Conway Marsh railway station
- Conway Rees
- Conway Street drill hall, Brecon
- Conway baronets
- Conwy Rural District
- Conwy Valley Railway Museum
- Conybeare Bruce
- Cook's Bridge, Rossett
- Corey Baldwin
- Cornelly
- Cornist Hall
- Corris Railway Grand Tour
- Corris Uchaf
- Cors Bodeilio National Nature Reserve
- Cors Bryn-y-Gaer
- Cors Dyfi nature reserve
- Cors Erddreiniog National Nature Reserve
- Cors Farlais
- Cors Geirch National Nature Reserve
- Cors Goch National Nature Reserve (Anglesey)
- Cors Goch National Nature Reserve (Llanllwch)
- Cors Nantcwnlle
- Cors y Llyn National Nature Reserve
- Corsydd Llangloffan
- Corsydd a Rwyth Cilyblaidd
- Corwen railway station
- Coryton, Cardiff
- Coryton Line
- County Hospital, Torfaen
- County Observer and Monmouthshire Central Advertiser
- County Voluntary Council
- Court Sart railway station
- Court leet
- Courtney Davies
- Covenant Society of the Free Welsh
- Cowbridge (Roman town)
- Cowbridge Road East
- Cowbridge Road West
- Cowbridge with Llanblethian
- Cradoc, Powys
- Cradoc railway station
- Crai, Powys
- Crai (village)
- Crai Reservoir
- Craig-cefn-parc
- Craig-y-llyn
- Craig-y-nos railway station
- Craig-y-penrhyn
- Craig-y-pistyll
- Craig Barnsley
- Craig Cerrig-gleisiad
- Craig Cerrig-gleisiad and Fan Frynych National Nature Reserve
- Craig Cwm Amarch
- Craig Cwm Silyn
- Craig Cywarch
- Craig Ddu–Wharley Point Cliffs
- Craig Eigiau
- Craig Evans (Welsh cricketer)
- Craig Evans (rugby union referee)
- Craig Goch Dam
- Craig Gwaun Taf
- Craig Hawkins
- Craig Pilling
- Craig Pont Rhondda
- Craig Rhos-y-felin
- Craig Williams (British politician)
- Craig y Cilau
- Craig y Forwyn (Denbighshire)
- Craig yr Hafod Tramroad
- Craiglon Bridge Halt railway station
- Craiglwyn
- Craigysgafn
- Cray railway station
- Creation Management
- Creigiau Gleision North Top
- Creigiau railway station
- Cremlyn
- Cresswell Castle
- Crest Mawr Wood
- Creuddyn, Ceredigion
- Creuddyn Peninsula
- Crew Green railway station
- Crib-y-rhiw
- Cribarth Disturbance
- Cribin Fawr
- Cribyn
- Criccieth Golf Course
- Criccieth Urban District
- Crickhowell High School
- Criggion
- Criggion railway station
- Crime and disorder reduction partnership
- Crindau
- Crindau Marina
- Cristiolus
- Cristion
- Croes-lan
- Croesor
- Croespenmaen
- Cromlech, Anglesey
- Cronicl (Llanbrynmair)
- Cronicl y Cerddor
- Cronicl y Cymdeithasau Crefyddol
- Cronicl yr Ysgol Sabbothol
- Cross Ash
- Cross Hands
- Cross Inn
- Cross Inn, Llantrisant
- Cross Inn railway station
- Crossgates, Powys
- Crossgates Coaches
- Crosskeys College
- Crossway, Monmouthshire
- Cruciform passage grave
- Crucorney
- Crug Eryr Castle
- Crug Hywel
- Crugyreryr
- Crumlin railway station (Wales)
- Crwst
- Crwys Road railway station
- Crychan Forest Tracks
- Crychan Formation
- Crynant New Colliery Halt railway station
- Crynfryn
- Culturenet Cymru
- Cuneglasus
- Custos Rotulorum of Anglesey
- Custos Rotulorum of Caernarvonshire
- Custos Rotulorum of Cardiganshire
- Custos Rotulorum of Monmouthshire
- Custos Rotulorum of Radnorshire
- Cwar Glas Quarry and Sawdde Gorge
- Cwm, Denbighshire
- Cwm-Hwnt
- Cwm-y-Glo railway station
- Cwm Bach, Sychpant
- Cwm Bargoed railway station
- Cwm Cadlan
- Cwm Caseg
- Cwm Clydach, Kidwelly
- Cwm Craig-ddu Quarry
- Cwm Crymlyn Road Section
- Cwm Cydfin, Leckwith
- Cwm Cyffog
- Cwm Dewi
- Cwm Doethie – Mynydd Mallaen
- Cwm Du Woodlands
- Cwm Felin Boeth Formation
- Cwm Glo
- Cwm Llwyd Fault
- Cwm Nantcol
- Cwm Penmachno
- Cwm Pennant Fault
- Cwm Risca Meadow
- Cwm Silicon
- Cwm Taf Fechan Woodlands
- Cwm Wanderers A.F.C.
- Cwm yr Abbey Stream Section
- Cwmaman Colliery Halt railway station
- Cwmaman Crossing Halt railway station
- Cwmann
- Cwmavon Glam railway station
- Cwmbach
- Cwmbach, Carmarthenshire
- Cwmbach railway station
- Cwmbran Central
- Cwmbran High School
- Cwmbran Stadium
- Cwmbrwyno
- Cwmcarn railway station
- Cwmcarnhywel
- Cwmcarvan
- Cwmcoednerth
- Cwmdauddwr
- Cwmdu, Swansea
- Cwmdu railway station
- Cwmduad
- Cwmfelin
- Cwmfelinfach
- Cwmffrwd
- Cwmffrwd Halt railway station
- Cwmffrwdoer Halt railway station
- Cwmgiedd
- Cwmllynfell
- Cwmllynfell railway station
- Cwmneol Halt railway station
- Cwmpennar
- Cwmrhyd-y-Gau Halt railway station
- Cwmrhydyceirw
- Cwmsychbant
- Cwmsyfiog Halt railway station
- Cwmsymlog
- Cwmtawe Community School
- Cwmtwrch RFC
- Cwmwysg
- Cwmynyscoy
- Cwmystwyth
- Cwrt-y-Gollen
- Cwrt Herbert
- Cwrtnewydd
- Cy Thomas
- Cycling at the 1958 British Empire and Commonwealth Games – Men's individual pursuit
- Cyfaill Deoniaeth Llanbadarn Fawr
- Cyfaill o'r Hen Wlad yn America
- Cyfarthfa
- Cyffylliog
- Cyfrinach y Bedyddwyr
- Cyfronydd Hall
- Cyfronydd railway station
- Cyfrwy
- Cyfyw
- Cylch-grawn Cynmraeg
- Cyledr Wyllt
- Cymau
- Cymdeithas Edward Llwyd
- Cymdeithas Lyfrau Ceredigion
- Cymdeithas y Dysgwyr
- Cymer Abbey
- Cymerig Limestone
- Cymmer Afan railway station
- Cymmer Corrwg railway station
- Cymru Alliance League Cup
- Cymyran Strait
- Cynan Nant Nyfer
- Cynan ap Hywel
- Cynan ap Maredudd
- Cynffig
- Cynffig/Kenfig SSSI
- Cynfrig ap Madog
- Cynghordy
- Cynghordy railway station
- Cynhaiarn
- Cynheidre Colliery
- Cynllaith
- Cynllo
- Cynnull-mawr
- Cynonville Halt railway station
- Cynwyd, Denbighshire
- Cynwyd Forest Quarry
- Cynwyd railway station (Wales)
- Cynwyl Elfed
- Cynwyl Elfed (electoral ward)
- Cynwyl Gaeo
- Cynwyl Gaeo (electoral ward)
- Cyril Davies (rugby union)
- Cyril John Harvey
- Cyril Jones (footballer)
- Cyril Le Marquand
- Cyril Trailor
- Cyril the Swan
- Cyrn Formation
- Cytgan
- Cytir Mawr
- Cytûn
- Cywarch
- Cywydd
- D. Ben Rees
- D. C. Harries
- D. Huw Owen
- Dafen, Carmarthenshire
- Dafen (electoral ward)
- Dafydd Alaw
- Dafydd Bach ap Madog Wladaidd
- Dafydd Baentiwr
- Dafydd Benfras
- Dafydd Benwyn
- Dafydd Cadwaladr
- Dafydd Ddu o Hiraddug
- Dafydd Emlyn
- Dafydd Epynt
- Dafydd Fynglwyd
- Dafydd Glyn Dyfrdwy
- Dafydd Glyn Jones
- Dafydd Goch Brydydd o Fuallt
- Dafydd Gorlech
- Dafydd Ieuan
- Dafydd Ifans
- Dafydd Jenkins (rugby union)
- Dafydd Llwyd ap Dafydd ab Einion ap Hywel
- Dafydd Llyfni
- Dafydd Offeiriad
- Dafydd Roberts
- Dafydd Trefor
- Dafydd ab Ieuan ab Iorwerth
- Dafydd ab Owain (bishop)
- Dafydd ap Bleddyn
- Dafydd ap Dafydd Llwyd
- Dafydd ap Gruffydd (poet)
- Dafydd ap Harri Wyn
- Dafydd ap Huw'r Gof
- Dafydd ap Hwlcyn ap Madog
- Dafydd ap Hywel Grythor
- Dafydd ap Ieuan Llwyd
- Dafydd ap Ieuan ab Owen
- Dafydd ap Llywelyn ap Madog
- Dafydd ap Maredudd Glais
- Dafydd ap Maredudd ab Ednyfed
- Dafydd ap Maredudd ap Tudur
- Dafydd ap Phylip ap Rhys
- Dafydd ap Rhys o Fenai
- Dafydd y Coed
- Dai Astley
- Dai Bevan
- Dai Collier
- Dai Hopkins (footballer, born 1902)
- Dai Lawrence
- Dai Lewis (footballer)
- Dai Llwyd
- Dai Maesmor
- Dai Powell
- Dai Rees (rugby, born c. 1885)
- Dai Thomas (footballer, born 1926)
- Dail Glaswellt
- Daily Post (North Wales)
- Dal: Yma/Nawr
- Dal Ati
- Dan-Lan-Y-Castell Quarry
- Dan Edwards (rugby union)
- Dan Isaac Davies
- Dan Newton
- Daniel Davies (bishop)
- Daniel Davies (physician, born 1899)
- Daniel Font
- Daniel John Davies
- Daniel Lewis Lloyd
- Daniel Pearson (cyclist)
- Daniel Price (priest)
- Daniel ap Llosgwrn Mew
- Danycoed Halt railway station
- Danygraig Halt railway station
- Daren
- Daren Fach
- Daren y Dimbath
- Darius Jokarzadeh
- Dark Horse: The Incredible True Story of Dream Alliance
- Darland High School
- Darlunydd
- Darran Valley
- Darren Waters
- Datblygu
- Dave Campbell (Welsh footballer)
- Dave Jones (footballer, born 1932)
- Dave Thomas (rugby union, born 1941)
- David Archard Williams
- David Bartlett (bishop)
- David Blodwell
- David Bowen, Felinfoel
- David Bowen (pathologist)
- David Bryant (rugby union)
- David Bryn-Jones
- David Burcher
- David Charles (minister)
- David Christopher Davies
- David Christopher Davies (missionary)
- David D'Auria
- David Daron
- David Davies (Baptist minister)
- David Davies (Dean of Wellington)
- David Davies (Independent minister and magazine editor)
- David Davies (Welsh priest)
- David Davies (archdeacon of Llandaff)
- David Davies (composer)
- David Davies (harpist)
- David Davies (physician)
- David Davies (rugby league, born c. 1915)
- David Davis (Castellhywel)
- David Edwardes (deputy herald)
- David Edwardes Davies
- David Edwards (footballer, born 1934)
- David Emrys Lewis
- David Evans (MP for Cardiff)
- David Evans (archdeacon of St Asaph)
- David Evans (rugby union, born 1988)
- David Glyn Bowen
- David Griffith (Clwydfardd)
- David Griffiths (archdeacon of Monmouth)
- David Griffiths (sport shooter)
- David Herbert Lloyd
- David Howell (priest)
- David Jacobs (Welsh athlete)
- David James Jenkins
- David John Davies
- David John Hayward
- David John Sully
- David Jones (antiquary, fl. 1560–1590)
- David Jones (antiquary, fl. 1750–1780)
- David Jones (archdeacon of Carmarthen)
- David Jones (footballer, born 1910)
- David Jones (footballer, born 1952)
- David Joshua Davies
- David Lambert (footballer)
- David Lee (archdeacon of Llandaff)
- David Lewis (British MP)
- David Lewis Davies
- David Lewis Jones
- David Lloyd (biographer)
- David Lloyd (tenor)
- David Lloyd George, 2nd Viscount Tenby
- David Maddocks
- David Maurice
- David Morral Lewis
- David Morris (footballer, born 1957)
- David Murray (1748–1794)
- David Nicholas (rugby union)
- David O'Dowd
- David Owen (Dewi Wyn o Eifion)
- David Parry-Jones
- David Parry (scholar)
- David Phelps (sport shooter)
- David Pugh (footballer, born 1947)
- David Reece (bishop)
- David Rees-Williams, 1st Baron Ogmore
- David Rees (British cross-country skier)
- David Richards (footballer, born 1910)
- David Richards (rugby union, born 1999)
- David Roberts (priest)
- David Stephen Davies
- David Thaxton
- David Thomas (Dewi Hefin)
- David Thomas (archdeacon of Cardigan)
- David Thomas (archdeacon of Gower)
- David Thomas (bishop)
- David Thomas (composer)
- David Thomas (field hockey)
- David Thomas Davies
- David Watcyn Morgan
- David Waters (rugby union)
- David Weatherley (rugby union)
- David Weaver (rugby union)
- David Williams (Archdeacon of St Davids)
- David Williams (Methodist minister, born 1877)
- David Williams (businessman, born 1969)
- David Williams (historian)
- David Williams (minister, born 1709)
- David Williams (priest, born 1841)
- David Williams (priest, born 1862)
- David Yeoman
- David Young (cleric)
- Dawn Kurtagich
- Ddol Uchaf
- Dduallt
- Dean of Llandaff
- Deborah's Hole Camp
- Deborah Evans-Quek
- Deborah Kay Davies
- Dechrau Canu, Dechrau Canmol
- Decline and abolition of the poor law system
- Dedwyddfa
- Dee Valley Dragons
- Dee Valley Way
- Deep Sleep (hotel)
- Deeside Consortium
- Deeside Leisure Centre
- Deeside Parkway railway station
- Deeside Stadium
- Deganwy Castle
- Deio ab Ieuan Du
- Denbigh, Ruthin and Corwen Railway
- Denbigh, Ruthin and Vale of Clwyd Free Press
- Denbigh Golf Club
- Denbigh railway station
- Denis Evans (rugby union)
- Denis Reardon
- Dennis Fowles
- Dennis Heywood
- Dennis Lambourne
- Dennis Madden
- Dennis Wight
- Denzil Thomas
- Deputy First Minister of Wales
- Derek Howes
- Derek Williams (art collector)
- Derek Williams (footballer, born 1934)
- Derfel Limestone
- Deri, Caerphilly
- Derlwyn, Ceredigion
- Derrick Main
- Derry Ormond
- Derry Ormond railway station
- Derwen
- Derwen-fach Meadow
- Derwen railway station
- Derwenlas
- Derwydd, Carmarthenshire
- Derwydd Road railway station
- Des Case
- Des Greenslade
- Devynock & Sennybridge railway station
- Dewar Cup Aberavon
- Dewi Bridges
- Dewi Cross
- Dewi Griffiths
- Dewi Havhesp
- Dewi Lake
- Dewi Morgan
- Dewi Sant Hospital
- Deytheur Grammar School
- Dic Aberdaron
- Dic Jones
- Dick Doncaster
- Dick Finnigan
- Dick Hosier
- Dick Krzywicki
- Dick Thomas (rugby league)
- Dick Turner (footballer)
- Dick Uzzell
- Dick Wilcock
- Dieulacres Chronicle
- Diffwys
- Diffwys West Top
- Digain
- Dihewyd
- Dimmy Franks
- Dinas, Gwynedd
- Dinas Cromlech
- Dinas Mawddwy
- Dinas Rhondda
- Dinas Rhondda railway station
- Dindaethwy
- Dinefwr Estate
- Dingestow railway station
- Dinieithon
- Dinmael
- Dinorwig
- Disgwylfa Chapel
- Disserth and Trecoed
- District of Monmouth
- Dmitri Arhip
- Do not go gentle festival
- Dogfan
- Dol-gau
- Dol-y-pandy
- Dol Formation
- Dolanog
- Dolarddyn Crossing railway station
- Dolau
- Dolau railway station
- Dolauhirion Bridge
- Dolbenmaen
- Dole, Ceredigion
- Dolfach
- Dolfor
- Dolgarrog Railway
- Dolgellau railway station
- Dolgerdd
- Dolgoch Falls
- Dolgran
- Dolhir Formation
- Dollwen
- Dolman Theatre
- Dolserau Halt railway station
- Dolwen railway station
- Dolwyddelan railway station
- Dolyhir
- Dolyhir railway station
- Domen Fawr, Tafolwern
- Don Emery
- Donald Farquharson (athlete)
- Donna Edwards (actress)
- Donna Rose (rugby union)
- Doreen Jones
- Doris Gubbins
- Dorothy Summers (gymnast)
- Dorrien Davies
- Doug Curtin
- Doug Rees (rugby union)
- Dougie Oliver
- Dovecote, Angle
- Dowlais
- Dowlais (High Street) railway station
- Dowlais Cae Harris railway station
- Dowlais Central railway station
- Dowlais Top (LNWR) railway station
- Dowlais Top railway station
- Downs, Vale of Glamorgan
- Dowrog Common
- Dr Williams' School
- Dragon's Eye (TV programme)
- Dragon Radio
- Drefach, Ceredigion
- Drope
- Drosgl
- Dru yoga
- Druid, Denbighshire
- Druidston
- Drum (Wales)
- Drws-y-Nant
- Drws-y-Nant railway station
- Dryslwyn railway station
- Duffryn Rhondda Halt railway station
- Duhonw
- Dulas, Anglesey
- Dulas, Irfon
- Dulas, Ithon
- Dumbarton House School
- Duncan Bush
- Duncan Evans
- Dunoding
- Dwrhyd Pit
- Dwyfan and Dwyfach
- Dwyfor
- Dwygyfylchi
- Dwyran
- Dwyran Rural District
- Dwyriw
- Dwywe
- Dyfed Archaeological Trust
- Dyfed County Council
- Dyfed Steels
- Dyfedeg
- Dyffryn-bern
- Dyffryn Ardudwy railway station
- Dyffryn Arth
- Dyffryn Cellwen
- Dyffryn Cennen
- Dyffryn Clwyd
- Dyffryn Gwaun
- Dyfi National Nature Reserve
- Dyfi hills
- Dyfnan
- Dyl Harris
- Dylan Hughes
- Dylan Moss
- Dylan Thomas Theatre
- Dyserth Quarry Limestone
- Dyserth Waterfall
- Dyserth railway station
- Dysgedydd y Plant
- Dà Mhìle Distillery
- Dôl-y-bont
- E. D. Jones
- Earlswood, Monmouthshire
- East Aberthaw Coast
- East Glamorgan General Hospital
- East Mouse
- East Orchard Castle
- Eastside, Swansea
- Ebbw Vale North
- Ebbw Vale South
- Ebbw Valley Walk
- Eddie Avoth
- Eddie Beynon
- Eddie Dowdall
- Eddie Jenkins
- Eddie Lawrence (footballer)
- Edeirnion
- Edern, Gwynedd
- Edling
- Edmund Birkhead
- Edmund Howell
- Edmund Meyrick (archdeacon of Bangor)
- Edmund Morgan (of Llandaff)
- Education Workforce Council
- Education administration in the United Kingdom
- Edward Bassenet
- Edward Bevan (bishop)
- Edward Bowen (footballer, born 1858)
- Edward Cadwaladr
- Edward Cresset
- Edward Dafydd
- Edward Dodd (police officer)
- Edward Edwards (archdeacon of Brecon)
- Edward Evans (poet)
- Edward Evelyn (footballer)
- Edward Gamage
- Edward Jenkins (priest)
- Edward Lincoln Lewis
- Edward Morris (footballer)
- Edward Owen (priest)
- Edward Parry (preacher and poet)
- Edward Pugh (artist)
- Edward Roberts (footballer)
- Edward Roberts (priest)
- Edward Shaw (footballer)
- Edward Talley (priest)
- Edward Taylor Jones
- Edward Tegla Davies
- Edward Vaughan (Welsh priest)
- Edward Welch (architect)
- Edwin Davies (publisher)
- Edwin Humphreys
- Edwin James (footballer)
- Edwin Williams (footballer)
- Edwin ap Hywel
- Edwina McGrail
- Edwinsford
- Efail Isaf
- Efail Isaf railway station
- Efailnewydd
- Efan Daniel
- Efenechtyd
- Efrydiau Athronyddol
- Egerton Grey Country House Hotel
- Eglwys Fach
- Eglwys Newydd Church
- Eglwys Sant Ioan, Carmarthen
- Eglwyscummin
- Eifion Evans (archdeacon of Cardigan)
- Eigion
- Eigron
- Eiludd Powys
- Einion Wan
- Einion Yrth ap Cunedda
- Einion ap Gwalchmai
- Einion ap Gwgon
- Einir Jones
- Eirian Williams
- Eirias Park
- Eirug Wyn
- Eirwyn George
- Eisingrug
- Eisteddfa Gurig
- Elaine Hugh-Jones
- Elaine Morgan (singer)
- Elan Valley Railway
- Elan Village
- Eldra
- Eleanor Coster
- Elen Rhys
- Eleri Earnshaw
- Eleri Mills
- Elfed Evans
- Elidir Sais
- Eliezer Griffiths
- Elim, Anglesey
- Elin's Tower
- Elin Harlow
- Elinor Gwynn
- Elisabeth Jones
- Eliseus Williams
- Eliza Constantia Campbell
- Elizabeth Anesta Sewell
- Elizabeth Jane Lloyd, Mrs Louis Jones
- Elizabeth Vaughan
- Ella Powell
- Ellis Bevan
- Ellis Cadwaladr
- Ellis Davies (priest)
- Ellis Evans (priest)
- Ellis Griffith (priest)
- Ellis Mee
- Ellis Shipp (rugby union)
- Ellis Thomas Davies
- Elms Bridge Halt railway station
- Elvet Collins
- Elvet Hundred
- Elvis Rock
- Elwyn John
- Elwyn Roberts
- Ely Rangers A.F.C.
- Elysian Grove
- Emlyn A. G. Watkins
- Emma Jones (footballer, born 1994)
- Emrys Ellis
- Emrys Hughes (rugby league)
- Emrys Roberts (poet)
- Emsger
- Emyr Evans
- Emyr Llywelyn
- Emyr Rowlands
- Ena Thomas
- Engedi, Anglesey
- Engineering Education Scheme Wales
- Englynion Gwydion
- Englynion y Clywaid
- Enid Luff
- Enid Morgan
- Ennal's Point
- Enoch Jenkins
- Enoder
- Enodoc
- Environment Wales
- Environmental issues in Wales
- Ephraim Williams (footballer)
- Epynt Way
- Eric Roberts (bishop)
- Eric St Johnston
- Eric Sunderland
- Erin Vaughan
- Ernest Evans (priest)
- Ernest Leigh
- Ernest Morgan (architect)
- Ernest Thomas Bush
- Ernie Bowdler
- Ernie Jones (footballer, born 1920)
- Ernie Morley
- Ernie Walley
- Erw y Ddafad-ddu
- Erwood
- Escape into the Park
- Esgairgeiliog
- Esgeiriau Gwynion
- Esgyrn Bottom
- Esmé Kirby
- Esther Lewis (missionary)
- Estrildis
- Esyllt Harker
- Ethan Lloyd
- Ethyllt ferch Cynan
- Etna Park
- Eubule Thelwall (academic, died 1727)
- Eurgrawn Wesleyaidd
- Euroswydd
- Evan Daniel
- Evan Davies (Calvinistic Methodist minister)
- Evan Davies (Independent minister)
- Evan Davies (almanac-maker)
- Evan Davies (educationalist)
- Evan Jenkins (footballer)
- Evan Jones (footballer)
- Evan Lloyd (rugby union, born 2000)
- Evan Owen Allen
- Evan Roberts (botanist)
- Evan Thomas (priest)
- Evan Watkins
- Evan Yardley
- Evans & Williams A.F.C.
- Ewan Rosser
- Ewart Lewis
- Eyarth railway station
- Ezer Griffiths
- F. J. Gillies
- FA Women's National League South
- FC Queens Park
- Fabian's Bay
- Faenor, Ceredigion
- Faerdrefawr
- Fair Trade Wales
- Fairbourne railway station
- Fairwater railway station
- Fairwood Common
- Fairwood Park Golf Course
- Falcondale
- Falcondale Lake
- Fan Frynych
- Fanny Bulkeley-Owen
- Farewell Rock
- Farmers' Union of Wales
- Farrar Road Stadium
- February 1866 Brecon by-election
- Federation Day
- Federation of Disability Sport Wales
- Federation of Welsh Anglers
- Fedw Fawr
- Felicity Evans
- Felin-Wnda
- Felin-fach
- Felin Fach Meadows, Cwmgwili
- Felin Fawr Slate Works
- Felin Fran Halt railway station
- Felin Hen Halt railway station
- Felin Llwyngwair
- Fenn's Bank railway station
- Fennant Road Halt railway station
- Ferndale railway station
- Fernhill, Rhondda Cynon Taf
- Fernhill (band)
- Fernhill railway station
- Ferryside railway station
- Ffa Coffi Pawb
- Ffair Fach Railway Cutting and River Section
- Ffair Rhos
- Ffairfach railway station
- Ffarmers
- Fferam
- Fferam Uchaf
- Ffernfael ab Idwal
- Ffernfael ap Meurig
- Ffernfael ap Tewdwr
- Ffestiniog Flags
- Ffestiniog Travel
- Ffinian
- Fflaps
- Fforestganol a Chwm Nofydd
- Ffos-y-ffin
- Ffoshelyg
- Ffostrasol
- Ffostrasol Wanderers A.F.C.
- Ffransis G. Payne
- Ffridd Gate railway station
- Ffrith
- Ffrith railway station
- Ffronfraith Halt railway station
- Ffrwd Fawr Waterfall
- Ffynnon-ddrain
- Ffynnon-oer
- Ffynnon Beuno and Cae Gwyn Caves
- Ffynnon Lloer
- Ffynnongroew
- Ffynone House School
- Fideo 9
- Fields Park A.F.C.
- Fields Park Pontllanfraith A.F.C.
- Filco Foods
- Firing Line: Cardiff Castle Museum of the Welsh Soldier
- Fishguard Folk Festival
- Fishguard Lifeboat Station
- Fishing industry in Wales
- Five Roads
- Fleur-de-Lis Platform railway station
- Flint Mountain
- Flint Mountain F.C.
- Flintshire Constabulary
- Flintshire Historical Society journal
- Flintshire Observer
- Foel-goch
- Foel Boeth
- Foel Cedig
- Foel Cwm Sian Llŵyd
- Foel Fenlli
- Foel Formation
- Foel Goch (Arenigs)
- Foel Goch (Hirnant)
- Foel Grach
- Foel Gron
- Foel Hafod-fynydd
- Foel Penolau
- Foel Rhudd
- Foel Wen South Top
- Foelallt
- Foelgastell
- Food Industry Centre
- Forden United F.C.
- Forden railway station
- Foresthall House
- Forestry in Wales
- Forge, Powys
- Forgotten Landscapes Project
- Former Vicarage, Blaenau Ffestiniog
- Foryd Bay
- Foryd Pier railway station
- Fouke Salisbury
- Fountain Bridge Halt railway station
- Four Crosses, Llandysilio
- Four Crosses F.C.
- Four Crosses railway station
- Four Mile Bridge
- Foxhall, Pembrokeshire
- Foxhall Newydd
- Francesca Rhydderch
- Francis Lloyd (died 1799)
- Francis Lloyd (priest)
- Frank Atherton
- Frank Davies (footballer, born 1903)
- Frank Jenkins (priest)
- Frank Scrine
- Frankie Jones (gymnast)
- Frazier Climo
- Fred Cook (Welsh footballer)
- Fred Dewey (footballer)
- Fred Godfrey (songwriter)
- Fred Hole
- Fred Jones (footballer, born 1909)
- Fred Jones (footballer, born 1938)
- Fred Kelly (footballer)
- Fred Perry (boxer)
- Fred Secombe
- Freddie John
- Freddie Smart
- Freddy Morgan
- Frederic Edmondes
- Frederick Green (footballer)
- Frederick Hughes (footballer)
- Frederick Jones (footballer)
- Frederick Rees
- Frederick Talbot
- Frederick Worsley
- Freshers (British TV series)
- Friog
- Fron, Powys
- Frongoch railway station
- Furnace, Carmarthenshire
- Furnace, Ceredigion
- Gabalfa railway station
- Gadfa
- Gaer, Newport
- Gaer (Black Mountains)
- Gaer Fawr, Llanilar
- Gaer Wood
- Gaer hillfort, Trellech
- Gaerllwyd
- Gaerwen
- Gaerwen railway station
- Galanas
- Gallt Llanerch - Coed Gelli-deg
- Gallt y Daren
- Gallt yr Ogof
- Galltfaenan Hall
- Garan Croft
- Garden City, Flintshire
- Garden Village, Swansea
- Garden Village, Wrexham
- Gareth Chapman
- Gareth Coppack
- Gareth Davies (Welsh politician)
- Gareth Davies (cricketer)
- Gareth Griffiths (rugby union)
- Gareth Jones (rugby union, born 1975)
- Gareth Knott
- Gareth Lewis
- Gareth Milton
- Gareth Pierce
- Gareth Roberts (co-driver)
- Gareth Thomas (rugby union, born 1993)
- Gareth Williams (British musician)
- Garn-yr-Erw railway station
- Garn Boduan
- Garnant railway station
- Garndiffaith
- Garndiffaith railway station
- Garndolbenmaen
- Garnedd-Wen Formation
- Garnedd Goch
- Garnedd Ugain
- Garneddwen
- Garneddwen Halt railway station
- Garnswllt
- Garreg Lwyd (Black Mountain)
- Garreg Lwyd (Rhayader)
- Garrison Chapel
- Garth, Ceredigion
- Garth, Powys
- Garth Bank Quarry
- Garth and Van Road railway station
- Garth railway station (Powys)
- Gary Jones (rugby union)
- Garyn Lucas
- Garyn Phillips
- Gatewen Halt railway station
- Gatewen Marsh
- Gathering Day
- Gau Graig
- Gavin Jones (squash player)
- Gelert's Farm Halt railway station
- Gelert (company)
- Gelli Bridge
- Gelli Formation
- Gellifor
- Gelligaer
- Gelligaer Urban District Council election results, 1909–1939
- Gelligroes Mill
- Gellilydan
- Gendros
- GeoMôn
- Geoff Beckingham
- Geoff Windsor-Lewis
- Geoffrey Cutter
- Geoffrey Evans (priest)
- Geoffrey Glyn
- Geoffrey Marshall (priest)
- Geoffrey Thomas (academic)
- George Ballsom
- George Bennett (rugby)
- George Bright (priest)
- George Clark (priest)
- George Evans (footballer, born 1935)
- George F. Gibbs
- George Glasscodine
- George Godding
- George Green (footballer, born 1912)
- George Griffiths (footballer, born 1865)
- George Gummer
- George Henry Powell
- George Higham
- George Jones (footballer, born 1930)
- George Makeston
- George Owen (priest)
- George Richards (Welsh footballer)
- George Robinson (cricketer, born 1861)
- George Savin
- George Thomas (footballer, born 1857)
- George Williams (footballer, born 1862)
- George Williams (footballer, born 1879)
- George Woosnam
- George Young (rugby union)
- Geraint Bowen (poet)
- Geraint Lloyd Owen
- Geraint Lövgreen
- Geraint Watkins
- Gerald Battrick
- Gerald Williams (rugby union)
- Gerrion Jones
- Gerry Humphreys
- Gerwyn Capon
- Gethin Davies
- Gething government
- Giant's Dance
- Giants Grave F.C.
- Gibbonsdown
- Gilbert Wright (priest)
- Gilbert Wynne
- Giles Langley
- Gileston
- Gilfach
- Gilfach Fargoed railway station
- Gilfach Goch RFC
- Gilfach Goch railway station
- Gilfachrheda
- Gilli Davies
- Gilwern
- Gilwern Hill, Powys
- Gladestry
- Gladstone, Vale of Glamorgan
- Glais (2nd) railway station
- Glamorgan-Gwent Archaeological Trust
- Glamorgan Bird Club
- Glamorgan Constabulary
- Glamorgan Monmouth and Brecon Gazette and Merthyr Guardian
- Glamorgan Pottery
- Glan-alaw
- Glan-y-môr, Ceredigion
- Glan-y-wern
- Glan-yr-Afon Halt railway station
- Glan-yr-afon, Bodffordd
- Glan-yr-afon, Gwynedd
- Glan Conwy
- Glan Conwy F.C.
- Glan Llyn Halt railway station
- Glan Pibwr Stream Section
- Glanamman railway station
- Glandyfi
- Glaneirw
- Glangrwyney
- Glanmule
- Glannau Penmon
- Glannau Porthaethwy
- Glannau Rhoscolyn
- Glanrhyd Halt railway station
- Glantwymyn
- Glanwydden
- Glanymor
- Glanyrafon, Ceredigion
- Glanyrafon railway station
- Glasbury-on-Wye railway station
- Glascoed
- Glascoed Halt railway station
- Glasfynydd Forest
- Glasgoed, Ceredigion
- Glasgwm
- Glasinfryn
- Glaslyn
- Glen George
- Glenboi
- Gloddaeth Hall
- Glogue Halt railway station
- Glyn Abbey railway station
- Glyn Gething
- Glyn Gower Formation
- Glyn Hopkins
- Glyn Jones (rugby league)
- Glyn Llewellyn
- Glyn Neath railway station
- Glyn Tarell
- Glynarthen
- Glyncaled
- Glyncoch
- Glyncorrwg railway station
- Glyndwr Hackett
- Glyndyfrdwy railway station
- Glynfach
- Glynneath (electoral ward)
- Glynrhonwy quarries
- Glyntaff Halt railway station
- Glyntraian
- Godor North Top
- Godre'r Graig
- Godreaman Halt railway station
- Goetre Fawr
- Goewin
- Goferydd
- Gogarth railway station
- Gogerddan
- Gogoyan
- Goitre Halt railway station
- Golden Grove, Carmarthenshire
- Golden Grove railway station
- Golden Hill Platform railway station
- Golfa railway station
- Golud yr Oes
- Golwg
- Golwg360
- Gomer Lloyd
- Gordon Britton
- Gordon James (priest)
- Gordon Jones (footballer, born 1886)
- Gordon MacWilliam
- Gordon Phillips (priest)
- Gordon Richards (footballer)
- Gordon Wells
- Goronwy Foel
- Gors, Anglesey
- Gorsedd, Flintshire
- Gorseinon Hospital
- Gorseinon railway station
- Gorsgoch
- Gorslas
- Gorslwyd
- Gorwel Owen
- Govilon
- Gower (magazine)
- Gower College Swansea
- Gower Explorer
- Gowerton South railway station
- Goytre
- Goytre, Monmouthshire
- Graham Bent
- Graham Harcourt
- Graham James Davies
- Graham Jones (footballer, born 1949)
- Graham Jones (rugby union)
- Graham Morris
- Graham Powell
- Graham Sweet
- Graham Wattley
- Graig, Llanarmon-yn-Ial
- Graig, Newport
- Graig, Pontypridd
- Graig Fawr
- Graig Formation
- Graig Syfyrddin
- Graig Villa Dino F.C.
- Graig quarry
- Grange Albion F.C.
- Grange University Hospital
- Gray Hill, Monmouthshire
- Gray Sandstone Group
- Greal (Llangollen)
- Greal y Corau
- Great Britain Superficial Deposits Supergroup
- Great Hamston
- Great House, Laugharne
- Great Nash
- Gredifael
- Green Grove, Ceredigion
- Greenfield Valley Heritage Park
- Greenhill, Swansea
- Greenmeadow
- Gregynog Festival
- Gresford railway station
- Griffith (name)
- Griffith (surname)
- Griffith Davies (poet)
- Griffith George
- Griffith Nanney
- Griffith William Hughes
- Grits (novel)
- Groes, Port Talbot
- Groesfaen Colliery Platform railway station
- Groesffordd
- Groesffordd Halt railway station
- Groeslon
- Grogg
- Gronant
- Gronant Dunes and Talacre Warren
- Gronant Formation
- Grovesend
- Grovesend railway station
- Gruffudd
- Gruffudd Fychan I
- Gruffudd Gryg
- Gruffudd Hiraethog
- Gruffudd Llwyd
- Gruffudd ab Adda
- Gruffydd Davies
- Gruffydd II ap Madog, Lord of Dinas Bran
- Gruffydd Robert
- Gruffydd ab Owain
- Gruffydd ap Madog Fychan
- Gungrog
- Gurthiern
- Guttorm Gunnhildsson
- Gutun Owain
- Gwaenysgor
- Gwalchmai ap Meilyr
- Gwalia (newspaper)
- Gwaun-Cae-Gurwen (electoral ward)
- Gwaun Lydan
- Gwaun y Llwyni
- Gwehelog
- Gwen Davies (editor)
- Gwenafwy
- Gwenffrwd, Aeron
- Gwenffrwd, Towy
- Gwern-y-Steeple
- Gwernaffield with Pantymwyn
- Gwernesney
- Gwernogle
- Gwernyfed
- Gwernyfed High School
- Gwernymynydd
- Gwersyllt Foresters F.C.
- Gwersyllt Hill Halt railway station
- Gwilym Bradley
- Gwilym R. Jones
- Gwilym Wilkins
- Gwion Hallam
- Gwladys Evan Morris
- Gwragedd Annwn
- Gwrddelw
- Gwredog
- Gwrfoddw
- Gwrgan Fawr
- Gwrgi Garwlwyd
- Gwrhai
- Gwriad ap Merfyn
- Gwyddelwern railway station
- Gwyddfarch
- Gwyddgrug
- Gwyddyl Ffichti
- Gwylog ap Beli
- Gwyn Hughes Jones
- Gwyn Morgan (writer)
- Gwyn Morgans
- Gwyn Williams (writer)
- Gwyndodeg
- Gwynedd Archaeological Trust
- Gwynedd Council elections
- Gwynedd Is Conwy
- Gwynedd League
- Gwynedd Lewis-Lingard
- Gwynedd Uwch Conwy
- Gwynfor Llewellyn
- Gwynfor Williams
- Gwynllwg
- Gwynne Williams
- Gwynno James
- Gwynt y Môr
- Gwys railway station
- Gwytherin
- Gwythyr ap Greidawl
- Gyfeillon Platform railway station
- Gyrn Moelfre
- H. G. Nicholas
- Hacio
- Hadnock Halt railway station
- Hafod Garregog National Nature Reserve
- Hafodiwan
- Hafodyrynys Platform railway station
- Hafren
- Hagan Evans
- Halen Môn
- Halfway tram stop (Great Orme)
- Halkyn Common and Holywell Grasslands
- Hanmer Mere
- Hannah Keryakoplis
- Harbourmaster Hotel
- Harford Fountain
- Harlech Dome
- Harlech Grits Group
- Harlech Military Railway
- Harlech railway station
- Harlequin Puppet Theatre
- Harold Carpenter Lumb Stocks
- Harold Charles
- Harold Jenkins (footballer)
- Harold Thomas (rugby, born 1914)
- Harold Williams (priest, died 2004)
- Harper's Grove – Lord's Grove
- Harri Deaves
- Harri Doel
- Harri Millard
- Harri O'Connor
- Harriet Jones (swimmer)
- Harrison Bright
- Harrison Walsh
- Harry Craven Williams
- Harry Fry (rugby union)
- Harry Griffiths (footballer, born 1931)
- Harry Hibbott
- Harry Hollis
- Harry Lewis (footballer, born 1910)
- Harry Millership
- Harry Parr-Davies
- Harry Parry
- Harry Toft
- Harry Trainer
- Harvey Rew
- Havens Head Retail Park
- Haverford Formation
- Haverford Mudstone
- Haverfordwest & Milford Haven Telegraph
- Haverfordwest Airport
- Haverfordwest High VC School
- Haverfordwest Priory
- Haverfordwest RFC
- Haverfordwest railway station
- Hawarden Bridge
- Hawarden Bridge railway station
- Hawarden Castle (medieval)
- Hawen
- Hawthorn, Rhondda Cynon Taf
- Hawthorn Greyhound Track
- Hawthorn High School
- Hawthorn House, Menai Bridge
- Hay-on-Wye railway station
- Hay Bluff
- Hay Urban District
- Haydn Davies (rugby union)
- Haydn Mainwaring
- Haydn Morris
- Hayley Stadium
- Hazel Brunker
- Headquarters Wales
- Health in Wales
- Healthcare Inspectorate Wales
- Heart North Wales Coast
- Heartsease, Knighton
- Hebron, Anglesey
- Heddiw (magazine)
- Hefeydd
- Hells Mouth Grits
- Hen-allt Common
- Hen Bentref Llandegfan
- Henblas, Anglesey
- Henborth
- Hendre, Anglesey
- Hendre-Rhys
- Hendre (Bangor electoral ward)
- Hendre Bach
- Hendy
- Hendy RFC
- Heneglwys
- Henfynyw
- Heniarth railway station
- Henllan, Ceredigion
- Henllanfallteg
- Henllys, Ceredigion
- Henllys, Torfaen
- Henry Adams (MP)
- Henry Bould
- Henry Brinley Richards
- Henry Church Jones
- Henry Davies (Baptist minister)
- Henry Edwards (footballer)
- Henry FitzMiles
- Henry Foulkes
- Henry Honore
- Henry Jones (lawyer)
- Henry Kennedy (architect)
- Henry Lynch Blosse
- Henry Maurice (minister)
- Henry Morgan (priest)
- Henry Naunton Davies
- Henry Richards (British Army officer)
- Henry Roxby Benson
- Henry Sabine
- Henry Stewart (archdeacon of Brecon)
- Henry Walter (priest)
- Henry de Winton
- Henryd
- Henwg
- Heol-y-Cyw
- Heol Senni
- Heolgerrig
- Heolgerrig Halt railway station
- Herbert Cory
- Herbert Jones (footballer, born 1929)
- Herbert Sisson
- Here are Lovers
- Herewald of Llandaff
- Hermon, Anglesey
- Herward Smithy
- Hieracium attenboroughianum
- High Cross, Newport
- High Performance Computing Wales
- High Shields railway station
- High Tor Limestone
- Highfield Road Halt railway station
- Highmead
- Highmead School
- Hightown Halt railway station
- Hilary Summers
- Hilton Cardiff
- Hirdre-Faig
- Hirwaun Pond Halt railway station
- His Majesty's Inspectorate of Constabulary and Fire & Rescue Services
- Historia Gruffud vab Kenan
- History of NHS Wales
- History of the harp in Wales
- Hockey Driscoll
- Hodge Bank
- Holidaymaker (magazine)
- Holland Arms railway station
- Holly Bush railway station
- Holly Holyoake
- Holly Lawrence
- Holly Williams (writer)
- Hollybush
- Holt, Wrexham
- Holton, Vale of Glamorgan
- Holway, Flintshire
- Holy Trinity Church, Greenfield
- Holy Trinity Church, Penrhos
- Holy Trinity Church, Trefnant
- Holyhead Admiralty Pier railway station
- Holyhead Golf Club
- Holyhead TMD
- Holyhead Urban District
- Holywell Golf Club
- Holywell Junction railway station
- Holywell Rural District
- Holywell Town railway station
- Holywell Workhouse Chapel
- Homagnostus
- Honddu Isaf
- Hook Wood
- Hope, Flintshire
- Hope & Pen-y-ffordd railway station
- Hope Exchange railway station
- Horace Blew
- Horace Debenham
- Horace Phillips (rugby union)
- Horeb, Carmarthenshire
- Horseshoe Pass
- Horton Beach
- Household Music: Three Preludes on Welsh Hymn Tunes
- Howel Davies
- Howel Samuel
- Howell Davies (bishop)
- Howell Davies (rugby union, born 1959)
- Howell Gwynne (MP)
- Hubert Hughes (priest)
- Hugh Arfon Evans
- Hugh Bellot
- Hugh Emyr Davies
- Hugh Evans (priest)
- Hugh Holbeche
- Hugh Iorys Hughes
- Hugh Jones (archdeacon of St Asaph)
- Hugh Jones (footballer)
- Hugh Meikle
- Hugh Morgan-Owen
- Hugh Nanney
- Hugh Pugh (priest)
- Hugh Pugh (sailor)
- Hugh Williams-Jones
- Hugh Williams (of Chester)
- Hugh Williams (priest)
- Hughe Hughes
- Hughley Shale
- Humffrey Davies
- Humfrey Edwards
- Hunts Bay
- Hunts Bay Oolite
- Huntsman's Leap
- Huw Cadwaladr
- Huw Jones (bishop)
- Huw Stephens
- Huw Sutton
- Huws Gray
- Hychddwn
- Hyddwn
- Hyfaidd ap Bleddri
- Hywel Coetmor
- Hywel Davies (broadcaster)
- Hywel Davies (footballer)
- Hywel Davies (jockey)
- Hywel Foel ap Griffri ap Pwyll Wyddel
- Hywel Teifi Edwards
- Hywel ab Edwin
- Hywel ab Owain
- Hywel ap Caradog
- Hywel ap Rhys (Glywysing)
- I. D. Ffraid
- Iago ab Idwal ap Meurig
- Ial
- Ian Boobyer
- Ian Capon
- Ian Eidman
- Ian Flanagan
- Ian Hutchinson (cricketer)
- Ian Jones (curler)
- Ian Jones (rugby union, born 1940)
- Ian Roberts (footballer, born 1961)
- Ian Robinson (rugby union)
- Ian Sturrock
- Ian Williams (speedway rider)
- Ibiza, Ibiza
- Iddog ap Mynio
- Idole
- Idris Jones
- Idris Towill
- Idris Williams (Welsh footballer)
- Idwal ap Meurig
- Iefan ab Owain Gwynedd
- Iestyn Harris (rugby union, born 1998)
- Iestyn Hopkins
- Iestyn Rees
- Ieuaf
- Ieuan Ddu ap Dafydd ab Owain
- Ieuan Lewis
- Ieuan Owen
- Ieuan Rhys Williams
- Ieuan ab Owain Glyndŵr
- Ieuan ap Gruffudd Leiaf
- Ieuan ap Tudur Penllyn
- Ifan Phillips
- Ifor Pritchard
- Ifor Williams Trailers
- Ilar Thomas
- Illustrated Usk Observer
- Iltid Nicholl
- Immanuel Feyi-Waboso
- Imperial Gazetteer of England and Wales
- Import of Live Fish (England and Wales) Act 1980
- In Bloom (Neck Deep song)
- Incline Top railway station
- Inexus
- Inter European Airways
- International Business Wales
- Ioan Croft
- Ioan Davies
- Ioan Evans (rugby union)
- Ioan Nicholas
- Ioan Tegid
- Iona Banks
- Iona Jones
- Iori Jenkins
- Iorwerth (Bishop of St Davids)
- Iorwerth Beli
- Iorwerth Drwyndwn
- Iorwerth Herbert
- Iorwerth Hirflawdd
- Iorwerth Hughes
- Iron Tram Bridge, Robertstown
- Isaac Singleton (priest)
- Isallt Bach
- Isfael
- Islwyn Davies
- Islwyn Davies (priest)
- Islwyn John
- Ithel Davies
- Ithel Hael
- Ithel ap Morgan
- Ivor Davies (rugby, born 1906)
- Ivor Jones
- Ivor Philips
- Ivor Powell (evangelist)
- Ivor Thomas (trade unionist)
- Ivor Vice
- Iwan Shenton
- Iwcs a Doyle
- Izaak Duffy
- J. Crichton & Company
- J. Meirion Lloyd
- Jabez Evans
- Jac Morgan
- Jac Price
- Jack Bowdler
- Jack Butler (footballer, born 1868)
- Jack Edwards (footballer, born 1876)
- Jack Fairweather (writer)
- Jack Garner (footballer)
- Jack Humphreys
- Jack Jenkins (Welsh footballer)
- Jack Jones (1920s Welsh footballer)
- Jack Mates
- Jack Scriven
- Jack Smith (footballer, born 1911)
- Jack Thomas (bishop)
- Jack Vale (footballer, born 2001)
- Jackie Price (bobsleigh)
- Jacob Beetham
- Jacob Davies
- Jacob Ifan
- Jacob Rees (architect)
- James Allan Smith
- James Allen (priest)
- James Bevan Bowen (MP)
- James Botham
- James Buckley (priest)
- James Childs Gould
- James Conway Brown
- James Crane (police officer)
- James Crisp (cricketer)
- James Davies (Baptist minister)
- James Davies (Iago ap Dewi)
- James Davies (footballer, born 1845)
- James Davies (politician)
- James Davies (schoolmaster)
- James Davies Lewin
- James Dickson Innes
- James Evans (Welsh politician)
- James Fender
- James Jubilee Young
- James Kitchener Davies
- James Kyriakides
- James Langworth
- James Lloyd (footballer)
- James Milo Griffith
- James Morris (footballer, born 1864)
- James Phillips (MP)
- James Pyke Thompson
- James Ratti
- James Sheekey
- James Sommerin
- James Trainer
- James Vincent (priest, born 1718)
- James Vincent (priest, born 1792)
- James Williams (archdeacon of Wrexham)
- James Wilson (footballer, born 1989)
- Jamie Hill (rugby union)
- Jamie Meikle
- Jamie Owen
- Jamie Slater
- Jane Richmond
- Janet Ackland
- Janet Davies (politician)
- Janet Lewis-Jones
- Jason Harries
- Jason Harrold
- Jasper Rees
- Jay Gibbs
- Jean Earle
- Jeff Evans (umpire)
- Jeff Global's Global Probe
- Jeff Parton
- Jeffrey Jones (footballer)
- Jeffreyston Pastures
- Jenkin Jones (captain)
- Jenner Park Stadium
- Jennifer Davies
- Jenny Hawkins
- Jenny Rathbone
- Jeremy Pugh
- Jeremy Winston
- Jermaine Asare
- Jersey Marine
- Jersey Marine railway station
- Jesse Meredith
- Jesse Williams (footballer, born 1903)
- Jessica Hogg
- Jevon Groves
- Jewin Welsh Presbyterian Chapel
- Jim Edwards (footballer, born 1874)
- Jim Shanklin
- Jim Vaughan
- Jimmy Cardno
- Jimmy Ithell
- Jimmy Jones (footballer, born 1895)
- Joan Osborne (bowls)
- Joanne Muggeridge
- Joanne Owen
- Joe Cowell
- Joe Goodchild
- Joe Hawkins
- Joe Lewis (footballer, born 1999)
- Joe Morgan (badminton)
- Joe Roberts (rugby union)
- Joe Walsh (footballer, born 1992)
- Joel James (politician)
- Johanne Brekke
- John "Wynn" ap Maredudd
- John Abel (minister)
- John Adams (Pembroke MP)
- John Arthur Price
- John Baker (died 1544)
- John Batchelor (politician)
- John Belcher (Methodist preacher)
- John Bird (artist)
- John Blackwall
- John Blackwell (Alun)
- John Blodwell
- John Bolton (Haverfordwest MP)
- John Bryant (harpist)
- John Bufton
- John C. Clarke
- John Cadvan Davies
- John Cawston
- John Cayo Evans
- John Charlton, 2nd Baron Charlton
- John Charlton, 3rd Baron Charlton
- John Charlton, 4th Baron Charlton
- John Clegge
- John Cockrill (politician)
- John Crichton-Stuart, 4th Marquess of Bute
- John Crompton (MP)
- John Daniel (printer)
- John Daniel Davies
- John Dassy
- John Davies (Methodist minister, born 1823)
- John Davies (Taliesin Hiraethog)
- John Davies (archdeacon of Wrexham)
- John Davies (author)
- John Davies (composer)
- John Davies (footballer, born 1856)
- John Davies (missionary)
- John Davies (printer and journalist)
- John Davies (steeplechase runner)
- John Davies of Hereford
- John De la Bere
- John Du Buisson
- John Edward Davies
- John Edward Jones (Welsh politician)
- John Edwards (1747–1792)
- John Edwards (MP for Denbighshire)
- John Edwards (archdeacon of St Asaph)
- John Elias Davies
- John Evan Davies
- John Evans (Haverfordwest MP)
- John Evans (archdeacon of Llandaff)
- John Evans (footballer, born 1859)
- John Eyton-Jones
- John Fulham
- John Funnell
- John Gilbert (Bishop of St Davids)
- John Gill (actor)
- Draft:John Goodwin (sport shooter)
- John Grantley Cooper
- John Griffiths (archdeacon of Llandaff)
- John Gruffith
- John Gwynoro Davies
- John Hanbury (1744–1784)
- John Harris (bishop)
- John Harris (priest)
- John Harris Jones
- John Haydn Davies
- John Hensleigh Allen
- John Hill (police officer)
- John Holdsworth (priest)
- John Hughes (ceramicist)
- John Hughes (footballer, born 1877)
- John Hunt (curler)
- John Ingleby (bishop)
- John Iorweth Hughes
- John James (archdeacon of Llandaff)
- John James Williams (poet)
- John Jeffreys (1706–1766)
- John Jeffreys (died 1715)
- John Jenkins (Gwili)
- John Jones (Ivon)
- John Jones (archdeacon of Bangor)
- John Jones (archdeacon of St Asaph)
- John Jones (bishop)
- John Jones (dean of Bangor)
- John Jones (footballer, born 1860)
- John Kelt Edwards
- John Lawrence (musician)
- John Lewis (dean of Llandaff)
- John Lewis Owen
- John Lloyd (Bishop of St Davids)
- John Lloyd (MP for Denbighshire)
- John Lloyd (archdeacon of Montgomery)
- John Lloyd (bishop of Swansea)
- John Lloyd (cricketer)
- John Lloyd (vicar of Cilcain)
- John Lomas (bishop)
- John Lougher
- John Luntley
- John Marshall (bishop)
- John Matthias (footballer)
- John Meaney (footballer)
- John Meirion Morris
- John Meyrick
- John Meyrick (politician)
- John Morgan (Bishop of St Davids)
- John Morgan (archdeacon of Bangor)
- John Morgan (of Tredegar)
- John Morgan Howell
- John Morris (footballer, born 1873)
- John Moulsdale
- John Mulhall (gymnast)
- John Mulvihill (rugby union)
- John Myddelton
- John Neal (Welsh footballer)
- John Ogwen
- John Ossian Davies
- John Owen Vaughan
- John Owen Williams (Pedrog)
- John Park Davies
- John Parker (cleric)
- John Parry (editor)
- John Parsons (footballer, born 1950)
- John Paschal
- John Perkins (rugby union)
- John Pettigrew (businessman)
- John Phillips (priest)
- John Pook
- John Poole-Hughes
- John Pratt (archdeacon of St Davids)
- John Prichard
- John Probyn
- John Pugh (priest)
- John Pugh Pryse
- John Pugsley (footballer)
- John Quarre
- John Rhys Davies (priest)
- John Richards (Bishop of St Davids)
- John Richardson (rugby union)
- John Roach (footballer, born 1862)
- John Roberts (Flint MP)
- John Roberts (Vicar of Tremeirchion)
- John Roberts (footballer, born 1857)
- John Roberts (footballer, born 1858)
- John Rogers (dean of Llandaff)
- John Salesbury
- John Salusbury (died 1578)
- John Smith (archdeacon of Llandaff)
- John Smith (bishop of Llandaff)
- John Smith (footballer, born 1944)
- John Sparkes
- John Stanberry
- John Stradling (priest)
- John Summers & Sons
- John Summers High School
- John T. Pritchard
- John Tapton
- John Taylor (Welsh footballer)
- John Thomas (priest, born 1736)
- John Thomas (priest, born 1891)
- John Trevelyan (chess player)
- John Trevor (died 1410)
- John Tripp (poet)
- John Tudor (cyclist)
- John Tyler (bishop)
- John Vaughan (died 1804)
- John Vaughan (footballer, born 1856)
- John Wakeford (rugby union)
- John Walters (priest and lexicographer)
- John Warren (priest)
- John White (Welsh lawyer)
- John Williams (Oxford academic)
- John Williams (dean of Llandaff)
- John Williams (evangelical priest)
- John Williams (rugby league, born 1907)
- John Williams (schoolmaster, born 1760)
- John Wogan
- John Wyn ap Cadwaladr
- John Wynne (1689–1718)
- John Wynne (died 1689)
- John Wynne Jones
- John of Monmouth (bishop)
- Johnny Rogers (rugby)
- Johnstown, Wrexham
- Jon Latimer
- Jonathan Ceredig Davies
- Jonathan Davies (Welsh priest)
- Jonathan Denning
- Jonathan Edwards (academic)
- Jonathan Evans (rugby union)
- Jonathan Lean
- Jonathan Mason (rugby union)
- Jonathan Tomlinson
- Jonathan Worsley
- Jordan Hart
- Jordan Holt (footballer, born 1994)
- Joseph Barnett
- Joseph Coope-Franklin
- Joseph Davies (magazine editor)
- Joseph Hoare (Welsh academic)
- Joseph Hudson Turner
- Joseph Miles
- Joseph Rogers (footballer)
- Joseph Williams (footballer)
- Josh Macleod
- Josh Ralph (rugby league)
- Josh Reynolds (rugby union)
- Josh Thomas (rugby union)
- Joshua Andrews
- Joshua Milton
- Journal of the Welsh Bibliographical Society
- Jubilee Bridge (Queensferry)
- Julie Murphy (singer)
- Julie Thomas (bowls)
- Justiciar of North Wales
- Justin Kerrigan
- Karl Johnson (actor)
- Kate Eaves
- Kate McNicol
- Keiran Williams
- Keith Hughes (rugby union)
- Keith Maddocks
- Keith Matthews (footballer)
- Keith Povey
- Keith Smalldon
- Keith Tyte
- Kelly-Louise Pesticcio
- Kemsley Mathias
- Ken Braddock
- Ken Buffin
- Ken Jones (footballer, born 1937)
- Ken Thomas (trade unionist)
- Ken Waters
- Kenfig Hill railway station
- Kenner Elias Jones
- Kenneth Bowen (tenor)
- Kenneth O. Morgan
- Kenneth Sharpe
- Keredic
- Kerry F.C. (Wales)
- Kerry Goulstone
- Kerry branch line
- Kerry railway station
- Kevin Green (investor)
- Kevin James (bowls)
- Kevin O'Brien (rugby union coach)
- Key Stage 5
- Kezia Burrows
- Kibbor
- Kidwelly Flats Halt railway station
- Kidwelly Industrial Museum
- Kidwelly railway station
- Kieran Hardy
- Kilgerran Halt railway station
- Kilgetty railway station
- Killay railway station
- Kilvrough Manor
- King's Hall, Aberystwyth
- King Edward VII Welsh National Memorial Association
- Kingsland, Anglesey
- Kingsley Whiffen
- Kingsway Shopping Centre
- Kinmel Bay
- Kinmel Bay F.C.
- Kinmel Bay and Towyn
- Kinmel Camp Railway
- Kinnerton, Powys
- Kinnerton railway station
- Kiran Carlson
- Knighton Rural District
- Knolton
- Knyvett Crosse
- Kristian Bell
- Kylie Nolan
- LGBTQ culture in Cardiff
- Lampeter Museum
- Lamphey Court
- Lamphey Cricket Club Ground
- Lamphey railway station
- Lando Platform railway station
- Landore Low Level railway station
- Landore TMD
- Landsker Borderlands Trail
- Latalia Bevan
- Latham Park
- Laugharne Castle
- Laugharne Weekend
- Laura Hughes (weightlifter)
- Laura May Walkley
- Laurance Delaney
- Lauren Townsend (footballer)
- Lauren Wells (footballer)
- Lauren Williams (taekwondo)
- Laurence Philipps, 1st Baron Milford
- Laurie Daniel
- Law Council of Wales
- Lawrence Bowen
- Lawrence Byford
- Lawrence Langner
- Lawrence Thomas (priest)
- Leaf Books
- Leckwith
- Leckwith, Cardiff
- Lee Dainton
- Lee Walker
- Leeswood
- Leeswood and Pontblyddyn
- Leete Limestone
- Legacy railway station
- Leighton Alfred
- Leighton Jenkins
- Leighton Williams
- Lemuel Mathews
- Len Apsey
- Len Cunningham
- Len Orchard
- Lengthsman
- Lennon Greggains
- Les Cartwright
- Les Jones (Welsh footballer, born 1922)
- Les Keen
- Les Pearce (Welsh rugby)
- Les Speed
- Les Williams (Welsh footballer)
- Letterston railway station
- Leucarum
- Level of Mendalgief
- Levi Gibbon
- Lewis Clarke (priest)
- Lewis Davies (writer)
- Lewis Jones (bishop)
- Lewis Jones (politician)
- Lewis Llewellyn
- Lewis Mansel
- Lewis Morgan (rugby union)
- Lewis Pryce
- Lewis Pugh Pugh
- Lewis Thomas (bishop)
- Lewis ab Owen ap Meurig
- Lewistown, Bridgend
- Lewistown F.C.
- Lewistown Halt railway station
- Lewys Glyn Dyfi
- Lewys Twamley
- Lex XI F.C.
- Liam Belcher
- Liam Williams (boxer)
- Libanus, Powys
- Libanus Chapel, Swansea
- Libraries Connected
- Lido Ground
- Lilian Nicholas
- Lily Woodham
- Limeslade Bay
- Lisa Peters
- List and Index Society
- List of Palmerston Forts around Milford Haven
- List of family seats of Welsh nobility
- Lister Tonge
- Lisvane (CAC) Tennis Club
- Lisvane Reservoir
- Lisvane and Thornhill railway station
- Little Mill, Monmouthshire
- Little Mill Junction railway station
- Little Ormes Head Quarry tramway
- Liverpool Courier
- Liverpool Daily Post
- Liverpool Mercury
- Lixwm
- Liza Burgess
- Llafar Halt railway station
- Llafur
- Llain-wen
- Llain-y-gawsai
- Llaingarreglwyd
- Llaingoch
- Llais (Wales)
- Llais Y Wlad
- Llampha
- Llan, Powys
- Llan Ddu Fawr
- Llanaber
- Llanaber railway station
- Llanaelhaearn
- Llanafan, Ceredigion
- Llanallgo
- Llanarmon, Gwynedd
- Llanarmon Limestone
- Llanarth, Ceredigion
- Llanarth, Monmouthshire
- Llanarthney
- Llanarthney Halt railway station
- Llanasa
- Llanbabo
- Llanbadarn Fynydd
- Llanbadarn railway station
- Llanbadarn y Garreg
- Llanbadoc
- Llanbadrig
- Llanbadrig - Dinas Gynfor
- Llanbeblig Book of Hours
- Llanbedr, Vale of Grwyney
- Llanbedr Airfield
- Llanbedr railway station
- Llanbedrgoch
- Llanbedrgoch railway station
- Llanberis railway station (London and North Western Railway)
- Llanbister Road railway station
- Llanbradach Quarry
- Llanbradach and Pwllypant
- Llanbradach railway station
- Llanbrynmair railway station
- Llancadle
- Llancaiach
- Llancaiach Colliery
- Llancayo
- Llandanwg
- Llandanwg railway station
- Llandarcy Platform railway station
- Llandawke
- Llanddarog
- Llanddeiniolen
- Llandderfel
- Llanddeusant, Carmarthenshire
- Llanddew
- Llanddewi Rhydderch
- Llanddewi Skirrid
- Llanddewi Ystradenny
- Llanddoged
- Llanddona
- Llanddona Common
- Llanddowror
- Llanddulas
- Llanddulas Limestone and Gwrych Castle Wood
- Llanddyfrwyr-yn-Edeligion
- Llandecwyn
- Llandecwyn railway station
- Llandegla Forest
- Llandegley
- Llandegveth
- Llandegwning
- Llandeilo'r-Fan
- Llandeilo Rural District
- Llandeilo Urban District
- Llandeilo railway station
- Llandenny
- Llandenny railway station
- Llandevaud
- Llandilo Bridge railway station
- Llandinam railway station
- Llandogo Halt railway station
- Llandough, Llanfair
- Llandough, Penarth
- Llandovery railway station
- Llandovery transmitting station
- Llandrillo railway station
- Llandrindod Wells Victorian Festival
- Llandrinio
- Llandrinio Road railway station
- Llandudno Albion F.C.
- Llandudno Junction TMD
- Llandudno Pier Dolomite
- Llandudno Urban District
- Llandudno Victoria tram stop
- Llandudwen
- Llandulas railway station
- Llandwrog
- Llandybie
- Llandybie railway station
- Llandyfaelog
- Llandyfaelog Fach
- Llandyfaelog Tre'r-graig
- Llandyfriog
- Llandyfrydog
- Llandygai
- Llandygwydd
- Llandysilio
- Llandysiliogogo
- Llandyssul railway station
- Llanedi
- Llanedwen
- Llanegwad
- Llaneilian
- Llanelidan
- Llanellen
- Llanelli Online
- Llanelli RFC 9–3 New Zealand
- Llanelli Rural
- Llanelli Talking Newspaper
- Llanelli Town Council
- Llanelli Waterside
- Llanelltyd
- Llanelly
- Llanelly Formation
- Llanelly House
- Llanelwedd
- Llanengan
- Llanerchymedd F.C.
- Llanerchymedd railway station
- Llanerfyl
- Llaneuddog
- Llaneugrad
- Llanfaelrhys
- Llanfair, Gwynedd
- Llanfair, Vale of Glamorgan
- Llanfair-Mathafarn-Eithaf
- Llanfair-ar-y-bryn
- Llanfair-is-gaer
- Llanfair-y-Cwmwd
- Llanfair-yn-Neubwll
- Llanfair-yng-Nghornwy
- Llanfair Caereinion railway station
- Llanfair Clydogau
- Llanfair Kilgeddin
- Llanfair Talhaiarn
- Llanfairfechan Town F.C.
- Llanfairfechan Urban District
- Llanfairfechan railway station
- Llanfallteg Track Section
- Llanfalteg Halt railway station
- Llanfaredd Halt railway station
- Llanfarian
- Llanfawr Mudstones
- Llanfechain railway station
- Llanfflewyn
- Llanfihangel-uwch-Gwili
- Llanfihangel-y-Pennant
- Llanfihangel-y-Pennant, Dolbenmaen
- Llanfihangel Aberbythych
- Llanfihangel Bachellaeth
- Llanfihangel Din Sylwy
- Llanfihangel Glyn Myfyr
- Llanfihangel Nant Brân
- Llanfihangel Nant Melan
- Llanfihangel Rhos-y-Corn
- Llanfihangel Rhydithon
- Llanfihangel Tor-y-Mynydd
- Llanfihangel Ysgeifiog
- Llanfihangel Ystrad
- Llanfihangel yn Nhowyn
- Llanfoist Fawr
- Llanfor
- Llanfrothen
- Llanfrynach
- Llanfugail
- Llanfwrog, Anglesey
- Llanfwrog, Denbighshire
- Llanfyllin railway station
- Llanfynydd railway station
- Llanfyrnach railway station
- Llangadog
- Llangadog railway station
- Llangadwaladr
- Llangain
- Llangammarch (parish)
- Llangammarch Wells
- Llangammarch railway station
- Llangan
- Llanganten
- Llangar
- Llangathen
- Llangattock Lingoed
- Llangedwyn Halt railway station
- Llangefni Urban District
- Llangeinor
- Llangeinor railway station
- Llangeinwen
- Llangeler
- Llangelynin railway station
- Llangelynnin, Gwynedd
- Llangennech RFC
- Llangennith, Llanmadoc and Cheriton
- Llangian
- Llanglydwen railway station
- Llangoed
- Llangoed Common
- Llangoed F.C.
- Llangoedmor
- Llangollen Advertiser
- Llangollen Rural
- Llangollen Rural District
- Llangollen railway station
- Llangors
- Llangorwen
- Llangovan
- Llangower railway station
- Llangristiolus
- Llangua
- Llangunllo
- Llangunnor
- Llangwnnadl
- Llangwyfan, Anglesey
- Llangwyllog
- Llangwyllog railway station
- Llangybi, Ceredigion
- Llangybi, Gwynedd
- Llangybi railway station (Ceredigion)
- Llangybi railway station (Gwynedd)
- Llangyfelach railway station
- Llangynfelyn
- Llangynhafal
- Llangynin
- Llangynllo railway station
- Llangynog, Carmarthenshire
- Llangynog railway station
- Llangynwyd railway station
- Llangynyw
- Llangystennin
- Llangywer
- Llanhamlach
- Llanharry railway station
- Llanhennock
- Llanhilleth railway station
- Llanidloes High School
- Llanidloes Without
- Llanidloes railway station
- Llaniestyn, Gwynedd
- Llanilar
- Llanion Halt railway station
- Llanllawddog
- Llanllechid
- Llanllibio
- Llanllowell
- Llanllugan Abbey
- Llanllwchaiarn, Ceredigion
- Llanllwni
- Llanllyfni
- Llanllyfni F.C.
- Llanllyfni lunula
- Llanmiloe
- Llanmorlais railway station
- Llannefydd
- Llannefydd F.C.
- Llannerch
- Llannerch railway station
- Llannewydd
- Llannon
- Llannor
- Llanover
- Llanrhaeadr-yng-Nghinmeirch
- Llanrhaiadr Mochnant railway station
- Llanrhaiadr railway station
- Llanrhidian Higher
- Llanrhidian Lower
- Llanrhuddlad
- Llanrhyddlad
- Llanrhystud
- Llanrug United F.C.
- Llanrumney United F.C.
- Llanrwst Rural District
- Llanrwst railway station
- Llansadwrn
- Llansadwrn, Anglesey
- Llansamlet railway station (MR)
- Llansanffraid Glyndyfrdwy
- Llansannan
- Llansannan F.C.
- Llansannor
- Llansantffraid, Ceredigion
- Llansantffraid railway station
- Llansawel
- Llansilin Road railway station
- Llansillin Rural District
- Llansoy
- Llanspyddid
- Llansteffan
- Llanstephan Cliffs
- Llanstephan Halt railway station
- Llantarnam
- Llantilio Crossenny
- Llantilio Pertholey
- Llantrisant, Anglesey
- Llantrisant, Monmouthshire
- Llantrisant Common and Pastures
- Llantrisant Fawr
- Llantrisant RFC
- Llantrisant rail accident
- Llantrithyd
- Llantwit Fardre railway station
- Llantwit Major RFC
- Llantysilio
- Llanuwchllyn F.C.
- Llanuwchllyn railway station
- Llanvabon
- Llanvair railway station
- Llanvetherine
- Llanvihangel-Ystern-Llewern
- Llanvihangel Gobion
- Llanvihangel Railway
- Llanvihangel railway station
- Llanwchaiarn, Ceredigion
- Llanwenarth
- Llanwenog
- Llanwern Golf Club
- Llanwern High School
- Llanwern railway station
- Llanwinio
- Llanwnda, Gwynedd
- Llanwnda railway station
- Llanwnnen
- Llanwnnog
- Llanwonno
- Llanwrda
- Llanwrda railway station
- Llanwrin
- Llanwrtyd
- Llanwrtyd railway station
- Llanybydder railway station
- Llanycefn railway station
- Llanychan
- Llanycil
- Llanycrwys
- Llanymawddwy
- Llanynghenedl
- Llanynys
- Llanyrafon
- Llawdden
- Llawryglyn
- Llay Bog
- Llechfaen
- Llechgynfarwy
- Llechog
- Llechwedd Du
- Llechylched
- Lledrod
- Lledwigan
- Llef
- Llettum-ddu
- Lletty Brongu railway station
- Llety-wen
- Lleufer
- Llewellyn Turner
- Llewelyn Davies (footballer)
- Llewelyn Griffiths
- Llewelyn Jones
- Llewelyn Lewellin
- Llewelyn Wynne Jones
- Lleyn sheep
- Llidiardau
- Lligwy
- Lligwy Bay
- Llinos Medi
- Lliswerry High School
- Llithfaen
- Lliwedd Bach
- Lloc
- Llong railway station
- Lloyd George Avenue
- Lloyd Jones (Welsh writer)
- Lloyd Llewellyn-Jones
- Llunwerth II
- Llwchwr
- Llwydcoed railway station
- Llwydiarth
- Llwydiarth-Esgob
- Llwyfan Cerrig railway station
- Llwyn
- Llwyn Formation
- Llwyncelyn, Rhondda Cynon Taf
- Llwynda-Ddu Camp
- Llwyngwern railway station
- Llwyngwril railway station
- Llwynhendy
- Llwynmawr
- Llwynypia railway station
- Llwytmor
- Llygad Gŵr
- Llygad Llwchwr
- Llyn Aled
- Llyn Alwen
- Llyn Arenig Fawr
- Llyn Bochlwyd
- Llyn Cwm Bychan
- Llyn Cwm Llwch
- Llyn Eiddwen
- Llyn Fawr
- Llyn Glangors
- Llyn Gwernan
- Llyn Gwynant
- Llyn Llydaw
- Llyn Llyffant
- Llyn Nantlle Uchaf
- Llyn Ogwen
- Llyn Parc
- Llyn Pencarreg
- Llyn Trawsfynydd
- Llyn Ty'n y Llyn
- Llyn y Gafr Formation
- Llynfaes
- Llynfi Road
- Llynoedd Ieuan
- Llys Halt railway station
- Llyswen
- Llysworney
- Llywarch Reynolds
- Llywarch ap Hyfaidd
- Llywel
- Llywelyn Aurdorchog
- Llywelyn Fawr ap Maredudd
- Llywelyn Goch ap Meurig Hen
- Llywelyn Williams
- Llywelyn ap Dafydd
- Llywelyn ap Madog
- Llywelyn ap Maredudd
- Llywernog
- Lock, Hulme & Co.
- Lockwood Morris & Co
- Logau-Las
- Loggerheads, Denbighshire
- Login Halt railway station
- London Welsh Amateur
- Long Hole Cave
- Long Mountain (Powys)
- Lord Lieutenant of Clwyd
- Lord Lieutenant of Mid Glamorgan
- Lord Lieutenant of Powys
- Lord Lieutenant of West Glamorgan
- Lordship of Bromfield and Yale
- Lordship of Gower
- Lort baronets
- Loss of right in English law
- Loughor bridge
- Louie Hennessey
- Lower Brynamman
- Lower Clydach River
- Lower Machen
- Lower Pontnewydd railway station
- Lowri Roberts
- Luc Evans
- Luca Giannini
- Lucas Cwmbran A.F.C.
- Ludlow Rural District
- Luentinum
- Lukas Carey
- Luke Davies (rugby union)
- Luke Fletcher (politician)
- Luke Ford (rugby union)
- Luke Morgan (rugby union)
- Luke Preston
- Luke Price
- Luke Scully
- Luke Yendle
- Lyn Davies (rugby union)
- Lyn Perkins
- Lyndon Simmonds
- Lôn Eifion
- Lôn Las Menai
- Lôn Las Ogwen
- M4 motorway Usk bridge
- Mabon ap Gwynfor
- Maches
- Machynlleth F.C.
- Madog Fychan
- Madog II ap Gruffydd, Lord of Dinas Bran
- Madog ap Gwallter
- Madog ap Rhiryd
- Maelgwn ab Owain Gwynedd
- Maelog
- Maelor Rural District
- Maelor South
- Maelrhys
- Maen-y-groes
- Maen Huail
- Maen Madoc
- Maenaddwyn
- Maenclochog railway station
- Maendy Quarry
- Maenor
- Maentwrog Road railway station
- Maes-bangor
- Maes-yr-Uchaf Wood
- Maes Hiraddug
- Maes Tegid
- Maes y Dre Recreation Ground
- Maes y Facrell National Nature Reserve
- Maes y Grug
- Maescar
- Maesdu Park
- Maespoeth Junction
- Maesteg (Neath Road) railway station
- Maesteg Castle Street railway station
- Maestir
- Maesybont
- Maesycoed
- Maesycrugiau railway station
- Maesyprior
- Magor Rural District
- Magor railway station
- Mahel of Hereford
- Mai Davies
- Main river
- Maindee
- Maindy
- Mair Jones
- Maisie Methuen
- Maisie Potter
- Mal Griffiths
- Mal Lucas
- Malcolm Dacey
- Malcolm Hersee
- Malcolm Squires
- Mallt-y-Nos
- Mamhilad
- Mancot
- Mandi Haswell
- Mandinam a Coed Deri
- Mandy Jones (politician)
- Manod Mawr
- Manod Mawr North Top
- Manod railway station
- Manon Lloyd
- Manor House Wildlife Park
- Manorbier railway station
- Manordeilo
- Manordeilo and Salem
- Mansel Aylward
- Manselton
- Manwgan ap Selyf
- Marc Limbert
- Marc Wyatt
- March 1888 Merthyr Tydfil by-election
- March law (Anglo-Welsh border)
- Marchlyn Mawr
- Marchwiel Hall
- Marchwiel railway station
- Marco Loughran
- Mardy, Monmouthshire
- Mardy A.F.C.
- Maredudd ab Owain Glyndŵr
- Maredudd ab Owain ab Edwin
- Maredudd ap Cynan ab Owain Gwynedd
- Maredudd ap Gruffydd
- Maredudd ap Llywelyn ap Maredudd ap Cynan
- Maredudd ap Rhobert
- Maredudd ap Rhys
- Maredudd ap Tewdws
- Marford Quarry
- Margam Halt railway station
- Margam Moors
- Margam TMD
- Margaret Delacourt-Smith, Baroness Delacourt-Smith of Alteryn
- Margaret Pomeroy
- Margaret Thomas (hymnwriter)
- Margo Morgan
- Mari Ellis Dunning
- Marian-glas
- Mariandyrys
- Marina Towers Observatory
- Marion Harrison
- Marion Purcell
- Mark Anstey
- Mark Brown (rugby union)
- Mark Davis (rugby union)
- Mark Douglas (rugby union)
- Mark Evans (comedian)
- Mark Joseph (footballer)
- Mark Rowley (rugby union)
- Marloes Mere
- Marquess of Anglesey's Column
- Marros-Pendine Coast
- Marros Group
- Marteg Halt railway station
- Martell Bridge Halt railway station
- Martha'r Mynydd
- Martin's Haven
- Martin Williams (priest)
- Martyn Lewis (badminton)
- Martyn Morris
- Marwysgafn
- Mary Davies (poet)
- Mary Elizabeth Davies
- Mary Owen (hymnwriter)
- Mary Pendrill Llewelyn
- Mary Stallard
- Mary Vaughan Jones Award
- Maryland, Monmouthshire
- Mason Grady
- Matt Back
- Matt Johnson (TV presenter)
- Matthew Dent (designer)
- Matthew Dwyer (rugby union)
- Matthew Hughes (badminton)
- Matthew Jones (priest)
- Matthew Nuthall
- Matthew Taylor (cricketer, born 1999)
- Matthew Vaughan-Davies, 1st Baron Ystwyth
- Matthew Wintle
- Matthewstown Halt railway station
- Maurice Blayne
- Maurice Davies (MP)
- Maurice Evans (footballer, born 1859)
- Maurice Glynne
- Maurice Meyricke
- Mawddach Trail
- Max Cleworth
- Max Edwards-Stryjewski
- Max Llewellyn
- Max Nagy
- May Hill Sandstone
- Mayor of Carmarthen
- Mayors in Wales
- Maël (saint)
- Mechain
- Mechell
- Medwyn Evans
- Megan Barker
- Meidrim
- Meidrim Road Section
- Meillionen railway station
- Meilyr Brydydd
- Meinir, Anglesey
- Meinir Gwilym
- Meirion Pennar
- Meirion Roberts
- Meirion Williams
- Meirionnydd Nant Conwy (Assembly constituency)
- Mel James
- Mel Meek
- Melanie Thomas (bowls)
- Meliden
- Meliden F.C.
- Meliden railway station
- Melin-y-Coed
- Melin-y-Wig
- Melindwr
- Melyncourt Halt railway station
- Menai Bach, Rhydwyn
- Menai Bridge Urban District
- Menna Richards
- Mental Health (Wales) Measure 2010
- Menw
- Meredith Edwards (actor)
- Meredith Morgan
- Meredydd Barker
- Merfyn ap Rhodri
- Meri Huws
- Merlin's Oak
- Merlin James
- Mermaid Quay
- Merthyr (Plymouth Street) railway station
- Merthyr Cynog
- Merthyr Road railway station
- Merthyr Tydfil (Cilsanws) Golf Club
- Merthyr Tydfil College
- Merthyr Tydfil Electric Tramways
- Merthyr Tydfil and Aberdare (UK Parliament constituency)
- Merthyr Tydfil and Rhymney (UK Parliament constituency)
- Merthyr Tydfil bus station
- Meurig (bishop)
- Meurig Williams
- Meurig ab Ithel
- Meurig ap Hywel
- Meurig ap Idnerth
- Meyrick baronets
- Michael Collins (rugby union, born 1986)
- Michael Condon
- Michael Deacon (bishop)
- Michael Komor
- Michael Newbold
- Michael Price (footballer, born 1982)
- Michael Roberts (college principal)
- Michael Scott (academic)
- Michael Williams (MP)
- Michael Wixey
- Michaela Breeze
- Michaelston-super-Ely
- Michton
- Mid-Wales Constabulary
- Mid Glamorganshire (UK Parliament constituency)
- Mid Wales South League
- Mid and South Pembrokeshire (UK Parliament constituency)
- Middletown, Powys
- Migneint
- Mike Doyle (comedian)
- Mike Gwilym
- Mike Harris (rower)
- Mike Knill
- Mike Poole
- Mike Preston (curler)
- Mike Rayer
- Mike Thomas (author)
- Mike Walker (tennis)
- Mike Williams (footballer, born 1956)
- Milebrook
- Milford Haven Formation
- Millennium Coastal Path
- Milltir Cerrig
- Milo, Carmarthenshire
- Minffordd
- Mirage (metal band)
- Miskin, Mountain Ash
- Mochdre, Powys
- Mochdre Sports F.C.
- Mochdre with Penstrowed
- Mochras
- Moel-y-don
- Moel-yr-hydd
- Moel Cynghorion
- Moel Druman
- Moel Eilio (Carneddau)
- Moel Emoel
- Moel Fferna
- Moel Gyw
- Moel Hebog shield
- Moel Hiraddug
- Moel Hiraddug Limestone
- Moel Hiraddug Quarries
- Moel Lefn
- Moel Llyfnant
- Moel Penamnen
- Moel Tryfan
- Moel Tŷ Uchaf
- Moel y Cerrig Duon
- Moel y Ffridd
- Moel y Gamelin
- Moel yr Ogof
- Moelfre, Conwy
- Moelfre (hill)
- Moelfre Isaf
- Moelfre Lifeboat Station
- Moelfre Uchaf
- Moelfryn
- Moelwyn Bach
- Moelwyn Mawr
- Moelwyn Mawr North Ridge Top
- Moelyci Environmental Centre
- Mold F.C.
- Mold Golf Club
- Mold Railway
- Mold railway station
- Mona, Anglesey
- Monachty
- Monkswood, Monmouthshire
- Monkton Old Hall
- Monmouth Mayhill railway station
- Monmouth School for Girls Rowing Club
- Monmouth Troy Goods Yard
- Monmouthshire Building Society
- Monmouthshire Way
- Monnow Valley Studio
- Monnow Valley Walk
- Montgomery Town F.C.
- Montgomeryshire Collections
- Montgomeryshire County War Memorial
- Montgomeryshire Football League
- Montgomeryshire and Glyndŵr (UK Parliament constituency)
- Moore Gwillim
- Morawelon
- Morben
- Mordaf
- Moreith ap Aidan
- Morfa Borth
- Morfa Harlech National Nature Reserve
- Morfa Mawddach railway station
- Morfa Stadium
- Morfyw
- Morgan-Botti lecture
- Morgan Allen
- Morgan Evans (rugby league)
- Morgan Hen ab Owain
- Morgan Jones (broadcaster)
- Morgan Jones (cricketer)
- Morgan Jones (railroad builder)
- Morgan Jones (rugby union)
- Morgan Knowles
- Morgan Llwyd
- Morgan MacRae
- Morgan Morgan-Owen
- Morgan Morris
- Morgan Powell
- Morgan Rhys
- Morgan Williams (rugby union, born 1995)
- Morgan ap Pasgen
- Morgannwg (journal)
- Moriah, Ceredigion
- Mornington Meadows
- Morriston East railway station
- Morriston Town A.F.C.
- Morriston West railway station
- Morus Dwyfech
- Moses Davies
- Moss Halt railway station
- Moss and Pentre railway station
- Mostyn railway station
- Moulton, Vale of Glamorgan
- Mount Pleasant, Merthyr Tydfil
- Mountain Ash Cardiff Road railway station
- Mountain Ash Comprehensive School
- Mountain Ash Urban District
- Mounton
- Mudiad Adfer
- Mumbles (community)
- Mumbles Beach
- Mumbles Hill
- Mumbles Pier railway station
- Mumbles Rangers F.C.
- Mumbles lifeboat disaster
- Murco Petroleum
- Mwdwl-eithin
- Mwnt
- Mwyngloddfa Castell
- Mwyngloddfa Cwmystwyth
- Mwyngloddfa Nantiago
- My Salah Mat
- Myarth
- Myddelton College
- Myddelton baronets
- Myddfai Steep Belt
- Mydroilyn
- Myfanwy Fychan
- Myfanwy Talog
- Mylett Road Section
- Mynach Falls
- Mynachdy
- Mynydd-Bach
- Mynydd Bach, Ceredigion
- Mynydd Cambergi
- Mynydd Ceiswyn
- Mynydd Drumau
- Mynydd Drws-y-Coed
- Mynydd Esgairweddan
- Mynydd Gartheiniog
- Mynydd Isa
- Mynydd Isa F.C.
- Mynydd Isa Spartans F.C.
- Mynydd Llandygai
- Mynydd Llwydiarth
- Mynydd Maendy
- Mynydd Marian
- Mynydd Mawr
- Mynydd Mechell
- Mynydd Moel
- Mynydd Perfedd
- Mynydd Tal-y-Mignedd
- Mynydd Ty-Isaf, Rhondda
- Mynydd Ystyfflau-Carn
- Mynydd y Cwm
- Mynydd y Gelli
- Mynydd y Glyn
- Mynyddcerrig
- Mynyddog Mwynfawr
- Myrddin ap Dafydd
- Myxococcus llanfairpwllgwyngyllgogerychwyrndrobwllllantysiliogogogochensis
- NIACE
- NPTC Group
- NWCFA Intermediate Cup
- NWCFA Junior Cup
- Nadia Lawrence
- Nancy Evans (table tennis)
- Nanheudwy
- Nannerch railway station
- Nant-y-Belan and Prynela Woods
- Nant-y-Ffrith
- Nant-y-derry
- Nant-y-moch Reservoir
- Nant-y-moel
- Nant Brân
- Nant Ceiswyn
- Nant Conwy RFC
- Nant Conwy Rural District
- Nant Cynnyd
- Nant Ffrancon Formation
- Nant Gelliwion Woodland
- Nant Glas
- Nant Gwernol railway station
- Nant Hir Formation
- Nant Hir Group
- Nant Irfon National Nature Reserve
- Nant Llwydiarth
- Nant Mill
- Nant Whitton Woodlands
- Nant y Perfedd
- Nantclwyd railway station
- Nantcwnlle
- Nantewlaeth Colliery Halt railway station
- Nantgaredig
- Nantgaredig railway station
- Nantlle
- Nantlle Vale F.C.
- Nantmel
- Nantyderry railway station
- Nantyglo and Blaina
- Nantymoel railway station
- Nantyronen railway station
- Narberth Road and Maenclochog Railway
- Narberth railway station (Wales)
- Narrative verdict
- Nasareth
- Nash-Williams
- Nash Lighthouse Meadow
- Nathan Buck (rugby union)
- Nathan Evans (rugby union)
- Nathan Shepperd
- Nathan Williams (rugby union, born 1983)
- Nathaniel Thomas (writer)
- Nathaniel Williams
- National Address Gazetteer
- National Amalgamated Labourers' Union
- National Assembly for Wales (Representation of the People) Order 2007
- National Cycle Route 88
- National Library of Wales Journal
- National Screen and Sound Archive of Wales
- Nature in Wales
- Nature of Wales
- Naunton Wayne
- Naz Ball
- Neath & District League
- Neath Abbey railway station
- Neath Canal Side railway station
- Neath Disturbance
- Neath Indoor Market
- Neath Port Talbot Hospital
- Neath Port Talbot Steelers
- Neath Rural District
- Neath and District Tramways Company
- Neath and Swansea East (UK Parliament constituency)
- Nebo, Anglesey
- Nebo, Gwynedd
- Nebo Chapel, Ystrad Rhondda
- Nefyn and District Golf Club
- Neil Swain
- Nelson Glam railway station
- Nelson and Llancaiach railway station
- Nercwys
- Nerys Jefford
- Netball Superleague
- Neuadd Idris
- Neuadd Trefawr
- Neuadd Wilym
- Neuaddyrynys
- Neudd-fawr
- Nevern Bridge
- Nevill Hall Hospital
- New Bridge, Newbridge-on-Usk
- New Brighton, Flintshire
- New Brighton Villa F.C.
- New Broughton, Wrexham
- New Broughton Road Halt railway station
- New Inn Bridge Halt railway station
- New Panteg RFC
- New Radnor Rural District
- New Radnor railway station
- New Row
- Newborough Forest
- Newbridge, Ceredigion
- Newbridge-on-Usk
- Newcastle, Monmouthshire
- Newchurch, Powys
- Newchurch and Merthyr
- Newport (Ymerodraeth State of Mind)
- Newport Bus
- Newport Cliffs
- Newport Corinthians F.C.
- Newport Corporation Tramways
- Newport Dock Street railway station
- Newport Ebbw Junction TMD
- Newport HSOB RFC
- Newport Market
- Newport Networks
- Newport Poor Law Union
- Newport Retail Park
- Newport Saracens RFC
- Newport Technical Institute
- Newport Unlimited
- Newport West Central railway station
- Newport West and Islwyn (UK Parliament constituency)
- Newport West railway station
- Newport bus station
- Newton, Brecknockshire
- Newton, Porthcawl
- Newtown, Rhondda Cynon Taf
- Newtown High School, Powys
- Newtown Wanderers F.C.
- Nia Caron
- Nia Roberts (actress)
- Nic Reynolds
- Nicholas Griffith
- Nicholas Hawkins (MP)
- Nick Swetman
- Nicola Cousins
- Nicola Crawford
- Nicola Davies (judge)
- Nicola Lewis
- Nidum
- Nigel Edwards (golfer)
- Nigel Rees (footballer)
- Nigel Whitehouse
- Nigel Williams (priest)
- Nigel Yates
- Nightingale Court
- Nikara Jenkins
- Nine Mile Point Colliery
- Nine Mile Point railway station
- Nisien
- Noel L. Owen
- Norma Curtis
- Norman Lloyd-Edwards
- Norman Matthews
- Norman Morgan
- Norman Pugh
- Norman Toutcher
- North Cornelly
- North Dock, Llanelli
- North East Wales Football League
- North Llanrwst railway station
- North Stack
- North Wales Chronicle
- North Wales Coast East Football League
- North Wales Coast West Football League
- North Wales Gazette
- North Wales Hospital
- North Wales International Music Festival
- North Wales Miners' Association
- North Wales Police and Crime Commissioner
- North Wales Weekly News
- North Wales and Liverpool Railway
- North Wales rugby
- Northop Hall
- Northop Hall Country House Hotel
- Norton, Powys
- Noson Lawen (TV series)
- Nuts and Bolts (TV series)
- O Oes Gwrtheyrn Gwrtheneu
- Oakdale Colliery
- Oakdale Hospital
- Oakenholt
- Oakford, Ceredigion
- October 1888 Merthyr Tydfil by-election
- Off to Philadelphia in the Morning (TV series)
- Offa's Country
- Ogilvie Village Halt railway station
- Ogmore, Vale of Glamorgan
- Ogmore Vale railway station
- Ogmore Valley
- Ogof Draenen
- Ogof Dydd Byraf
- Ogof Nadolig
- Ogwen (electoral ward)
- Ogwen Group
- Old Brewery Quarter
- Old Castle Down
- Old Church Stoke
- Old Mortuary Chapel, Carew
- Old Padeswood Golf Club
- Old Pulford Brook Meadows
- Old Radnor
- Old St. Peter's Church, Llanbedr Dyffryn Clwyd
- Old Welsh Grey Sheepdog
- Oldcastle, Monmouthshire
- Oliver Davies (harpist)
- Oliver Gwilt
- Oliver Lloyd
- Oliver Morris
- Oliver Pike (cricketer)
- Oliver Taylor (footballer, born 1869)
- Olivia Clark
- Olmarch
- Olmarch Halt railway station
- Olway Brook
- Omar Taylor-Clarke
- Onllwyn
- Onny Shale
- Operation Tân
- Oriel Ynys Môn
- Ossie Evans
- Oswald Davies
- Overton-on-Dee railway station
- Overton Rural District
- Owain Harris-Allan
- Owain Jones (priest)
- Owain Owain
- Owain Taylor
- Owain Williams (rugby union)
- Owain ap Caradog
- Owain ap Dafydd
- Owain ap Llywelyn ab y Moel
- Owain ap Maredudd (Dyfed)
- Owen Caech Ó Dubhda
- Owen Davies (Baptist minister)
- Owen Evans (civil servant)
- Owen Evans (priest)
- Owen Gwyn
- Owen Jenkins (priest)
- Owen Jenkins (rugby union)
- Owen Lane
- Owen Morgan (cricketer)
- Owen Owen (priest)
- Owen Phillips (priest)
- Owen Picton Davies (journalist)
- Owen Powell
- Owen Roberts (educator)
- Owen Wood
- Oystermouth railway station
- Padeswood and Buckley railway station
- Painscastle
- Painscastle Rural District
- Palmerstown, Vale of Glamorgan
- Pam John
- Pamela Hopkins
- Pandy, Gwersyllt
- Pandy, Powys
- Pandy Quarries
- Pandy Tudur
- Pandy railway station
- Panic Shack
- Pant, Merthyr Tydfil
- Pant-gwyn, Ceredigion
- Pant-y-crug
- Pant Glas
- Pant Glas railway station
- Pant Halt railway station
- Pantasaph
- Panteg
- Pantinker
- Panton Arms Hotel, Pentraeth
- Pantydwr railway station
- Pantyffordd Halt railway station
- Pantyffynnon
- Pantymwyn
- Pantysgallog (High Level) Halt railway station
- Pantysgallog (Low Level) Halt railway station
- Pantywaun Halt railway station
- Papur Bro
- Paradwys
- Parc, Penrhyndeudraeth
- Parc-Seymour
- Parc-llyn
- Parc-y-Dwrlyn Ground
- Parc Cynog
- Parc Linden, Lixwm
- Parc Slip Colliery
- Parc Trostre
- Parc a'r Mynydd
- Parc y Rhos
- Parciau
- Parcyrhun Halt railway station
- Park, Merthyr Tydfil
- Park Avenue, Aberystwyth
- Park House Outbuildings
- Partrishow
- Pasgen ap Cyngen
- Pat Daniels (rugby union)
- Pat Evans (gymnast)
- Pat Murphy (Welsh footballer)
- Pat Perks
- Patrick Hannan (presenter)
- Patrick Leary
- Patrick Palmer (rugby union)
- Paul Affleck
- Paul Child (singer)
- Paul Davies (Conservative politician)
- Paul Knight
- Paul Mackness
- Paul Morgan (rugby)
- Paul Roberts (footballer, born 1977)
- Paul Taylor (bowls)
- Pedairffordd Halt railway station
- Peggy Jackson
- Pegwn Mawr
- Pelenna
- Pelenna (electoral ward)
- Pemberton, Carmarthenshire
- Pembrey Airport
- Pembrey Burrows
- Pembrey Coast
- Pembrey Country Park
- Pembrey and Burry Port Town
- Pembrey and Burry Port railway station
- Pembrey railway station
- Pembroke Limestone Group
- Pembroke cattle
- Pembroke railway station
- Pembrokeshire College
- Pembrokeshire Historian
- Pembrokeshire Motor Museum
- Pen-Llyn
- Pen-Lôn
- Pen-Rhiw-Newydd
- Pen-Ty Pastures & Wood
- Pen-bont-rhyd-y-beddau
- Pen-cae
- Pen-dre
- Pen-llwyn
- Pen-rhiw
- Pen-y-Bont-Fawr
- Pen-y-Bont railway station
- Pen-y-Cefn Pasture
- Pen-y-cae, Powys
- Pen-y-cae-mawr
- Pen-y-coedcae
- Pen-y-fai, Bridgend
- Pen-y-fan Pond
- Pen-y-ffordd
- Pen-y-garnedd
- Pen-y-graig-goch
- Pen-y-groes, Carmarthenshire
- Pen-y-lan, Ceredigion
- Pen-y-wenallt
- Pen Bwlch Llandrillo
- Pen Dal-aderyn
- Pen Llithrig y Wrach
- Pen Pumlumon Arwystli
- Pen Pumlumon Llygad-bychan
- Pen Rhionydd
- Pen Talar
- Pen Tranch
- Pen y Boncyn Trefeilw
- Pen y Brynfforchog
- Pen y Castell
- Pen y Dre High School
- Pen yr Allt Uchaf
- Pen yr Helgi Du
- Penallt Halt railway station
- Penallt Viaduct
- Penally railway station
- Penarddun
- Penarth Coast
- Penarth Head
- Penarth Quarry
- Penarth Times
- Penbedw
- Penbol
- Penbontrhydyfoethau
- Pencader, Carmarthenshire
- Pencader Junction railway station
- Pencader railway station
- Pencarnisiog
- Pencarreg
- Penceilogi
- Pencelli
- Penclawdd railway station
- Pencoed Athletic BGC
- Pencoed College
- Pencoed railway station
- Pencraig, Anglesey
- Pencreigiau'r Llan
- Penderyn, Rhondda Cynon Taf
- Pendine Museum of Speed
- Penegoes
- Pengam (Mon) railway station
- Pengam railway station
- Pengelli National Nature Reserve
- Pengenffordd
- Pengorffwysfa
- Penhelig railway station
- Peniarth
- Peniarth 164
- Peniarth 259B
- Peniarth 28
- Peniarth 32
- Peniarth 481
- Peniarth 6
- Peniel, Carmarthenshire
- Penisa'r Waun
- Penlan
- Penlan Club A.F.C.
- Penllech
- Penllyn, Gwynedd
- Penllyn, Vale of Glamorgan
- Penmachno Document
- Penmaen Halt railway station
- Penmaenmawr Urban District
- Penmaenpool railway station
- Penmark
- Penmorfa
- Penmorwdd
- Pennal
- Pennant, Ceredigion
- Pennant, Powys
- Pennant Measures
- Penparc
- Penparc, Pembrokeshire
- Penpedairheol, Caerphilly
- Penpergwm
- Penpont Manor House
- Penprysg
- Penrhiw Priory
- Penrhiwceiber railway station
- Penrhiwfer
- Penrhiwpal
- Penrhos, Anglesey
- Penrhos, Gwynedd
- Penrhos, Monmouthshire
- Penrhos Cottage
- Penrhos Country Park
- Penrhosfeilw
- Penrhyd Lastra
- Penrhyn (electoral ward)
- Penrhyn railway station
- Penrhyndeudraeth railway station
- Penrice (community)
- Pensarn
- Pensarn, Gwynedd
- Pensarn railway station
- Penscynor Halt railway station
- Pentir
- Pentir Rhiw railway station
- Pentraeth railway station
- Pentre, Ceredigion
- Pentre-bach, Ceredigion
- Pentre-bach, Powys
- Pentre-bach railway station
- Pentre-gat
- Pentre-rhew
- Pentre Bach
- Pentre Bont
- Pentre Broughton Halt railway station
- Pentre Dwr
- Pentre Gwynfryn
- Pentre Platform railway station
- Pentrebach, Swansea
- Pentrebane
- Pentrecelyn
- Pentrechwyth
- Pentrefelin, Ceredigion
- Pentrefelin Halt railway station
- Pentrefelin railway station
- Pentrellwyn
- Pentrepiod Halt railway station (Gwynedd)
- Pentresaeson Halt railway station
- Pentwyn Deintyr
- Pentwyn Halt railway station
- Pentwynmawr Platform railway station
- Pentyrch railway station
- Penuwch
- Penweddig
- Penybont
- Penybont, Ceredigion
- Penybontfawr railway station
- Penybryn
- Penychen
- Penydarren B.G.C.
- Penydarren Park
- Penygarn, Torfaen
- Penygraig railway station
- Penygraigwen
- Penygroes railway station
- Penylan Quarry
- Penymynydd
- Penyrheol, Caerphilly
- Penyrheol, Swansea
- Penyrheol, Trecenydd and Energlyn
- Penyrheol Comprehensive School
- Penyrheol Halt railway station
- Penystrywad
- Percy James
- Percy May (gymnast)
- Percy Watkins
- Peredur Owen Griffiths
- Perfedd Hundred
- Personation of a juror
- Perthcelyn
- Peryf ap Cedifor
- Peter Arthur
- Peter Brooks (priest)
- Peter Clarke (social worker)
- Peter Creed
- Peter Davies (footballer, born 1936)
- Peter Diversi
- Peter Francis (rugby union)
- Peter Griffiths (footballer, born 1862)
- Peter Maurice (Dean of Bangor)
- Peter Maurice (priest)
- Peter Noyes
- Peter Penry-Jones
- Peter Pike (priest)
- Peter Rees (rugby union, born 1925)
- Peter Rees (rugby union, born 1937)
- Peter Stead (writer)
- Peter Williams (Welsh Methodist)
- Peter Williams (footballer, born 1960)
- Peter Woodman (priest)
- Peterstone
- Peterstone Gout
- Phil Clark (director)
- Phil John (rugby union, born 1962)
- Phil Lewis (rugby union)
- Phil Llewellyn
- Phil May (rugby union)
- Phil Morgan (rugby union)
- Phil Price (rugby union)
- Phil Pugh
- Philanthropic Order of True Ivorites
- Philip David
- Philip Pedlar
- Philip Powell (martyr)
- Philip Weekes
- Phyllis Linton
- Pickhill Halt railway station
- Picture Frame Seduction
- Pierce Lewis
- Pigeon's Ford
- Pill A.F.C.
- Pine Lodge Meadow
- Pinged railway station
- Pisgah, Ceredigion
- Pistyll
- Pistyll y Llyn
- Pitt's Head railway station
- Placid Casual
- Plaid Glyndŵr
- Plas Cwmcynfelin
- Plas Gwyn
- Plas Gwynant
- Plas Halt railway station
- Plas Llanfair
- Plas Llanstephan
- Plas Power railway station (Wrexham, Mold and Connah's Quay Railway)
- Plas Power railway station (Wrexham and Minera Railway)
- Plas Tan y Bwlch
- Plas Uchaf Formation
- Plaskynaston Lane
- Plasmarl railway station
- Plastic Raygun
- Plethyn
- Plough Lane Chapel, Brecon
- Pluck Lake
- Pochin Pits Colliery Platform railway station
- Poetry Wales
- Point of Ayr Colliery Company
- Ponkey Crossing Halt railway station
- Pont-Hwfa
- Pont-rhyd-y-groes
- Pont-y-Pant railway station
- Pont-y-gwaith
- Pont Aberarth
- Pont Bodefail
- Pont Bodfel
- Pont Books
- Pont Ceri
- Pont Henri
- Pont Lliw railway station
- Pont Paith
- Pont Rug (Halt) railway station
- Pont Treseli
- Pont y Ddraig
- Pont y Fenni Quarry and Road Cutting
- Pont y Gilfach
- Pontardawe Festival
- Pontardawe Tinplate Works
- Pontardawe railway station
- Pontarddulais Comprehensive School
- Pontarddulais Park
- Pontarddulais Town A.F.C.
- Pontarsais
- Pontblyddyn
- Pontcynon
- Pontdolgoch
- Pontdolgoch railway station
- Ponterwyd
- Pontfadog
- Ponthenry railway station
- Ponthir
- Ponthirwaun
- Pontllanfraith A.F.C.
- Pontllanfraith Low Level railway station
- Pontlliw
- Pontlliw and Tircoed
- Pontlottyn
- Pontlottyn Blast Furnace F.C.
- Pontlottyn railway station
- Pontrhyd-Saeson
- Pontrhydfendigaid
- Pontrhydyfen railway station
- Pontrhythallt railway station
- Pontrobert
- Pontsarn Halt railway station
- Pontsiân
- Pontsticill
- Pontwalby Halt railway station
- Pontyates railway station
- Pontyberem
- Pontyberem railway station
- Pontycymer
- Pontycymmer railway station
- Pontygwaith
- Pontygwaith Halt railway station
- Pontymoile
- Pontypool Clarence Street railway station
- Pontypool Crane Street railway station
- Pontypridd Chronicle
- Pontypridd High School
- Pontyrhyl railway station
- Pool Quay railway station
- Popton Fort
- Port Penrhyn
- Port Talbot Lifeboat Station
- Port Tennant
- Portbury Shipyard railway station
- Porth-y-Felin
- Porth Ceiriad
- Porth Neigwl
- Porth railway station
- Porthcawl Comprehensive School
- Porthcawl Lifeboat Station
- Portheiddy Moor
- Porthkerry Viaduct
- Porthmadog Urban District
- Porthmadog railway station
- Portmead
- Potter's Electric News
- Powys (surname)
- Powys Digital History Project
- Powys Teaching Health Board
- Powysland Club
- Prano Bailey-Bond
- Prejudicial interest
- Pren-gwyn
- Prenteg
- Presbyterian Chapel, Rossett
- Prestatyn Chapel Street railway station
- Prestatyn Coal Company
- Prestatyn Community Hospital
- Prestatyn High School
- Prestatyn Sports F.C.
- Prestatyn and Rhyl Panthers
- Presteign railway station
- Price Town
- Price White
- Prifardd
- Prince Charles Hospital
- Princess of Wales Hospital
- Principal council
- Prisoners' Education Trust
- Probyn-Jones baronets
- Proceedings of the South Wales Institute of Engineers
- Pryce baronets
- Prydain
- Prys-Iorwerth
- Pryse's Cambrian Book Register
- Pumlumon Cwmbiga
- Pumlumon Fach
- Puncheston railway station
- Pwll
- Pwll-y-Pant railway station
- Pwll Dwfn
- Pwll Fanog wreck
- Pwll Lagoon
- Pwlldu Bay
- Pwllfanogl
- Pwllgloyw
- Pwllmeyric
- Pwllywrach
- Quadrant Shopping Centre
- Quakers Yard and Merthyr Railway
- Qualifications, Curriculum and Assessment Authority for Wales
- Quarter Bach
- Queensferry railway station
- Quentin Berriman
- R. Geraint Gruffydd
- RAF Prestatyn
- Rachub
- Radnor Valley F.C.
- Radyr Motive Power Depot
- Rae Howells
- Rae Jenkins
- Raer Theaker
- Raglan Footpath railway station
- Raj Popat
- Ralph Bigland (born 1757)
- Ralph Jones (footballer)
- Randolph Thomas
- Rassau
- Ray Booth
- Ray Pulis
- Ray Williams (bowls)
- Ray Williams (rugby union, born 1927)
- Raymond Garlick
- Raymond Glendenning
- Raymond Renowden
- Rebecca Television
- Red Bull Unleashed
- Red Lion Hill
- Red Marl Group
- Red Wharf Bay
- Redhill Mudstone
- Rees David
- Reginald Brian
- Reginald Clarry
- Reginald Hathway
- Registered Teacher Programme
- RenewableUK Cymru
- Reports and Transactions, Cardiff Naturalists' Society
- Residuary Body for Wales
- Resolven
- Resolven (electoral ward)
- Resolven railway station
- Rest Bay
- Restaurant James Sommerin
- Reuben Davies
- Reuben Humphreys
- Reuben Morgan-Williams
- Reynoldston
- Rhain ap Cadwgan
- Rhain ap Maredudd
- Rhain the Irishman
- Rhandirmwyn
- Rhayader Castle
- Rhayader Rural District
- Rhedyw
- Rheidol Falls railway station
- Rheidol Power Station
- Rheola, Wales
- Rheon James
- Rhes-y-cae
- Rhewl (Llanynys, Denbighshire)
- Rhewl railway station
- Rhiangoll
- Rhiannon Henry
- Rhidian
- Rhidian Brook
- Rhigos Halt railway station
- Rhipinllwyd
- Rhirid Flaidd
- Rhiryd ap Bleddyn
- Rhiw Goch
- Rhiw Valley Light Railway
- Rhiwaedog
- Rhiwallon ap Cynfyn
- Rhiwargor
- Rhiwbina railway station
- Rhiwderin
- Rhiwderin Congregational Chapel
- Rhiwfawr
- Rhiwfron railway station
- Rhiwlas Formation
- Rhiwsaeson
- Rhoda Willis
- Rhodri Davies (rugby union)
- Rhodri Evans
- Rhodri Lewis
- Rhodri Thomas
- Rhodri ab Idwal Foel
- Rhodri ap Gruffudd
- Rhodri ap Hyfaidd
- Rhodri ap Hywel
- Rhondda Labour and Liberal Association
- Rhondda Rebels
- Rhondda and Ogmore (UK Parliament constituency)
- Rhondda by-pass
- Rhoose Point
- Rhos-on-Sea Golf Club
- Rhos-y-garth
- Rhos-y-gwaliau
- Rhos (GWR) railway station
- Rhos Blaen Carrog
- Rhos Bwlch-y-rhandir
- Rhos Cefn Hir
- Rhos Cruglas
- Rhos Dolau-Bran
- Rhos Fawr
- Rhos Fullbrook
- Rhos Gellie
- Rhos Goch National Nature Reserve
- Rhos Llawr Cwrt National Nature Reserve
- Rhos Pwllygawnen
- Rhos railway station
- Rhoscolyn
- Rhosddu Halt railway station
- Rhosgadfan
- Rhosgoch
- Rhosgoch railway station
- Rhosmeirch
- Rhosneigr
- Rhosrobin Halt railway station
- Rhostryfan
- Rhostryfan railway station
- Rhostyllen railway station
- Rhosydd
- Rhosydd Castell-du & Plas-y-bettws
- Rhosygadair Newydd
- Rhosymedre
- Rhosymedre Halt railway station
- Rhosyr
- Rhosyr (cantref)
- Rhuallt
- Rhuawn Bebyr
- Rhuddlan, Ceredigion
- Rhun ab Owain Gwynedd
- Rhwydrys
- Rhychwyn
- Rhyd, Ceredigion
- Rhyd, Gwynedd
- Rhyd-Meirionnydd
- Rhyd-Rosser
- Rhyd-ddu
- Rhyd-lwyd
- Rhyd-uchaf
- Rhyd-y-Beillen
- Rhyd-y-Marchogion
- Rhyd-y-Saint railway station
- Rhyd y Foel
- Rhydargaeau
- Rhydcymerau
- Rhydderch (bishop)
- Rhyddfedd Frych
- Rhydowen
- Rhydowen Halt railway station
- Rhydwyn
- Rhydyclafdy
- Rhydyfelin (High Level) Halt railway station
- Rhydymwyn railway station
- Rhydyn Hall
- Rhygyfarch
- Rhyl/Prestatyn Built-up area
- Rhyl Coasters
- Rhyl Dragons F.C.
- Rhyl Flats
- Rhyl High School
- Rhys Anstey
- Rhys Britton
- Rhys Bwtting
- Rhys Cadwaladr
- Rhys Davies (rugby union, born February 1998)
- Rhys Davies (rugby union, born November 1998)
- Rhys Enoch
- Rhys Fawr ap Maredudd
- Rhys Gethin
- Rhys Goch Eryri
- Rhys Henry
- Rhys Jenkins (rugby union)
- Rhys Jenkins (runner)
- Rhys Powell
- Rhys Prichard
- Rhys Vaughan
- Rhys Williams (rugby union, born 1979)
- Rhys ab Owen
- Rhys ap Robert
- Rice Rees
- Richard Avent
- Richard Barratt
- Richard Barrett (composer)
- Richard Bassett (priest)
- Richard Benyon (gymnast)
- Richard Brunstrom
- Richard Bulkeley, 3rd Viscount Bulkeley
- Richard Cole-Hamilton
- Richard Cornwall (died 1569)
- Richard Cyril Hughes
- Richard Davies (archdeacon of Brecon)
- Richard Delabere
- Richard Diplock
- Richard Donovan (rugby union)
- Richard Fothergill (ironmaster)
- Richard Gay (field hockey)
- Richard Gough (Welsh footballer)
- Richard Gwynn
- Richard Harford
- Richard Hersee
- Richard Hughes (archdeacon of Bangor)
- Richard Jarrett
- Richard Jones (bishop)
- Richard Jones (footballer, born 1875)
- Richard Jones (footballer, born 1878)
- Richard Jones (footballer, born 1879)
- Richard Langford (priest)
- Richard Lewis (bishop of Llandaff)
- Richard Mackenzie Williams
- Richard Mason (Welsh author)
- Richard Meredyth Richards
- Richard Nanney
- Richard Newcombe (priest)
- Richard Owen (priest)
- Richard Owen Jones
- Richard P. Howell
- Richard Parry (bishop)
- Richard Parry Williams
- Richard Price (Radnor MP)
- Richard Puskyn
- Richard Rees (rugby union)
- Richard Rice Thomas
- Richard Richards (1787–1860)
- Richard Roberts (priest)
- Richard Vaughan (judge)
- Richard Venables
- Richard Ward (priest)
- Richard William Dafydd
- Richard William Davies
- Richard Wintle
- Richard Young (bishop of Rochester)
- Richmond Park, Carmarthen
- Rico Zulkarnain
- Ridgeway, Newport
- Rio Dyer
- Riot City Ravens
- Risca Community Comprehensive School
- Risca and Pontymister railway station
- Risen (2010 film)
- River Adda (Wales)
- River Aled
- River Alun, Pembrokeshire
- River Amman
- River Arrow, Wales
- River Arth
- River Artro
- River Banwy
- River Brenig
- River Cain
- River Carno
- River Cegidog
- River Clydach, Monmouthshire
- River Clydach (Neath)
- River Clywedog, Denbighshire
- River Cynon
- River Cywyn
- River Dulais
- River Dulas
- River Eitha
- River Elwy
- River Ffyddion
- River Geirionydd
- River Gele
- River Giedd
- River Gwendraeth
- River Gwili
- River Hawen
- River Ithon
- River Lliedi
- River Llugwy
- River Machno
- River Rhaeadr
- River Solva
- River Tanat
- River Terrig
- River Trothy
- River Vyrnwy
- River Wheeler
- River Wnion
- Riverside, Newport
- Roath railway station
- Rob Appleyard
- Rob Sherman (football manager)
- Rob Sutherland
- Robert Albert Jones
- Robert Allen (Baptist minister)
- Robert Anderson Evans
- Robert Bird (Welsh politician)
- Robert C. Hastie
- Robert Edwards (pirate)
- Robert Ellis (clergyman)
- Robert Evans (Master of Magdalene)
- Robert Gruffydd
- Robert Jones (Labour politician)
- Robert Jones (Welsh composer)
- Robert McMillan (footballer)
- Robert Minhinnick
- Robert Morgan (rugby union)
- Robert Morris (Welsh footballer)
- Robert Myddelton Biddulph (1805–1872)
- Robert Robotham (priest)
- Robert Salesbury
- Robert Watkin Wynne
- Robert White (priest)
- Robert Williams (archdeacon of Carmarthen)
- Robert Williams (archdeacon of Gower)
- Robert Williams (died 1763)
- Robert Williams (pathologist)
- Robert Williams (poet)
- Robeston Wathen Quarries
- Robin Davies
- Robin Llywelyn
- Robin Parfitt
- Robin Williams (physicist)
- Robson Blake
- Robyn Léwis
- Rock climbing in Wales
- Rockspur Fords F.C.
- Rocky Valley Halt railway station
- Rod Williams (Welsh footballer)
- Roderick Jones (baritone)
- Roger Adams (printer)
- Roger Bidgood
- Roger Blake
- Roger Blyth
- Roger Cradock
- Roger Evans (footballer)
- Roger Green (rugby league)
- Roger Hughes (priest)
- Roger Jones (bowls)
- Roger Michaelson
- Roger Mostyn (footballer)
- Roger Vaughan (of Clyro)
- Roger Vaughan of Porthamal
- Roger Yeoman
- Rogerstone A.F.C.
- Roland Mathias
- Roland Thomas
- Roley Williams
- Roman Walker
- Ron Evans (rugby union)
- Ron Hugh
- Ron Jones (businessman)
- Ron Jones (rugby union)
- Ron Wynn (footballer)
- Ronald James Tree
- Ronan Vibert
- Ronnie Flanagan
- Ronnie Morris (rugby union)
- Ronnie Williams (footballer)
- Rory O'Connor (rugby union, born 1932)
- Rose Cottage, Ruthin
- Rose Mary Crawshay
- Rose Thomas (field hockey)
- Rosebush railway station
- Rossett Hall
- Rossett railway station
- Roundton Hill
- Rovi (magician)
- Rowland Ap Meredydd
- Rowland Ellis (bishop)
- Rowland Fothergill
- Rowland Gwynne
- Rowland Prichard
- Rowland Williams (priest)
- Rownd a Rownd
- Roy Burnett
- Roy Davies (bishop)
- Roy Evans (table tennis)
- Roy Saunders (author)
- Royal Alexandra Hospital, Rhyl
- Royal Institution of South Wales
- Royal Oak Foundation
- Royal Society of Architects in Wales
- Ruabon/Llantysilio Mountains and Minera
- Ruby Levick
- Ruby Miller (cyclist)
- Rudry
- Rugby League Amateur Four Nations
- Rumney Quarry
- Ruqaya Izzidien
- Ruth Hussey (doctor)
- Ruth Jên
- Ruth Martin-Jones
- Ruthin Union Workhouse
- Ruthin and Cerrig-y-Drudion Railway
- Ruthin railway station
- Ryan Elias
- Ryan George
- Ryan Hillier
- Ryan Viggars
- Ryan Watkins
- Ryan Wilkins
- Ryan Woodman
- Ryan and Ronnie
- S4C Authority
- S4C Dau
- SC2 (leisure complex)
- SP Manweb
- SS Mael and Sulien's Church, Corwen
- Sadyrnfyw
- Sailors' Chapel, Angle
- Saint Bugi
- Saint Dunod
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- Saint Gwenfyl
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- Saint Ina
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- Saint Llibio
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- Saint Rhian
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- Saint Tegai
- Saint Trillo
- Saint Tudglyd
- Saleem Kidwai (Muslim Council of Wales)
- Salem, Ceredigion
- Saltney Ferry railway station
- Sam Costelow
- Sam Davies (cricketer)
- Sam Davies (footballer, born 1894)
- Sam Fenwick
- Sam Jones (Welsh footballer)
- Sam Moore (rugby union)
- Sam Rowlands
- Sam Wainwright
- Samantha Quayle
- Sampson Lort
- Samson Lee
- Samuel Brookes
- Samuel Davies (priest)
- Samuel Jones (footballer, born 1866)
- Samuel Jones (footballer, born 1870)
- Samuel Kurtz
- Samuel Richardson (High Sheriff)
- Sanddef
- Sandfields East
- Sandy, Carmarthenshire
- Sandy Griffiths
- Sandycroft
- Sandycroft railway station
- Sarah Jones (field hockey)
- Sarah Lianne Lewis
- Sarah Loosemore
- Sarah Thomas (badminton)
- Sarah Wixey
- Sardis Road
- Sarn, Bridgend
- Sarn Badrig
- Sarn Gynfelyn
- Sarn Meyllteyrn
- Sarn railway station
- Sarn y Bwch
- Sarnau railway station
- Saron, Carmarthenshire
- Saunders Davies
- Saundersfoot railway station
- Saundersfoot to Telpyn Coast
- Saxon Jenkins
- Scafell Halt railway station
- Schools Council
- Scott Matthews (rugby union)
- Scott Otten
- Scott Phillips (cricketer)
- Scott Williams (footballer)
- Sealand, Flintshire
- Sealand Rifle Range Halt railway station
- Sean Griffiths
- Secondary Schools Examinations Council
- Sefnyn
- Seisyll Bryffwrch
- Selattyn
- Selwyn Closs-Parry
- Selwyn Griffith
- Selyf ap Cynan
- Senedd Standards of Conduct Committee
- Senghenydd railway station
- Senior Presiding Judge for England and Wales
- Senni Beds
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- Seren Cymru
- Seren Gibson
- Seren Gomer
- Seren Stiwdios
- Sesswick Halt railway station
- Severn Bridge Railway
- Sevira, daughter of Maximus
- Sgorio
- Sgorio Cymru
- Shadrach Pryce
- Shaftesbury, Newport
- Sharon Morris
- Shaun Chapple
- Shelim Hussain
- Shelter Cymru
- Sherman Theatre
- Shirley Griffiths (priest)
- Sholeshook Limestone
- Shotton Lagoons and Reedbeds
- Shrapnel (Welsh punk band)
- Sian Adey-Jones
- Sian Eleri
- Sian Harries
- Sian Morris
- Sian Phillips (musician)
- Sibrydion
- Sid Lawrence
- Sikhism in Wales
- Silian, Ceredigion
- Simon Brooks
- Simon Davies (Welsh TV presenter)
- Simon Lloyd (archdeacon of Merioneth)
- Simon Mathews
- Simon Thelwall (MP died 1586)
- Simon Thelwall (MP died 1663)
- Simon Yorke (1903–1966)
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- Sion Jones (rugby league)
- Sion Morris
- Siop Nain
- Sir Charles Kemeys, 2nd Baronet
- Sir Charles Kemeys, 3rd Baronet
- Sir Charles Lloyd, 1st Baronet, of Milfield
- Sir Charles Tynte, 5th Baronet
- Sir David Llewellyn, 1st Baronet
- Sir Edward Stradling, 5th Baronet
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- Sir John Stradling, 1st Baronet
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- Sir Rhys Llewellyn, 2nd Baronet
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- Sir Robert Thomas, 1st Baronet
- Sir Roger de Pulesdon
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- Sirhowy Valley Ridgeway Walk
- Sirhowy railway station
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- South Stack Formation
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- St Cenydd Comprehensive School
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- St David's Church, Bettws
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- St David's Welsh Church, Rhosllanerchrugog
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- St Davids Lifeboat Station
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- St Dwywe's Church
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- St Dyfrig's Church, Treforest
- St Elidan's Church, Llanelidan
- St Elli Church, Llanelli
- St Garmon's Church, Capel Garmon
- St George, Conwy
- St Gwenfaen's Church, Rhoscolyn
- St Harmon
- St Harmons railway station
- St Hilary's Chapel
- St Illtyd's Church, Llanhilleth
- St Illtyd's Motte
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- St James's Church, Manorbier
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- St Llwydian's Church, Heneglwys
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- St Matthew's Church, Abernant
- St Maughans
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- St Nicholas and Bonvilston
- St Peter's Church, Newborough
- St Rhwydrys's Church, Llanrhwydrys
- St Richard Gwyn Catholic High School, Barry
- St Sadwrn's Church, Llansadwrn
- St Tathan's Church
- St Tudwal's Lighthouse
- St Tysilio's Church, Menai Bridge
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- Stac Rhos
- Stafford Common
- Stan Davies
- Stan Morgan
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- Steff Evans
- Steffan Thomas
- Stephanie Burgis
- Stephanie Williams (Welsh footballer)
- Stephen Bayley
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- Stephen Gomes
- Stephen J. Bush
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- Stephen Parry (Welsh MP)
- Stephen Patrington
- Stephen Pugh
- Stephen Terry
- Steve Doyle
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- Steve James (Christian musician)
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- Steve Mackreth
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- Steve Witherden
- Stormy Down
- Storws Wen Golf Club
- Stradey
- Strumble Head - Llechdafad Cliffs
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- Stryt Las a'r Hafod
- Stuart Bell (bishop)
- Stuart Cornes
- Stuart Gallacher
- Stuart James Hutchings
- Stuart Parfitt
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- Studia Celtica
- Sue Pinnington
- Sugar Loaf, Carmarthenshire
- Sulien
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- Summit tram stop
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- SuperDragons
- Superintendent registrar
- Surf Life Saving Association of Wales
- Sutton, Vale of Glamorgan
- Sutton stone
- Swansea Bay Sea School
- Swansea Bay railway station
- Swansea Borough Police
- Swansea Central police station
- Swansea County Borough Council
- Swansea East Dock railway station
- Swansea Festival of Music and the Arts
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- Swansea Indoor Bowls Stadium
- Swansea Mosque
- Swansea Pride
- Swansea Riverside railway station
- Swansea St Thomas railway station
- Swansea Vale
- Swansea Valley
- Swansea Victoria railway station
- Swansea Wind Street railway station
- Swansea bus station
- Swellies
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- Swim Wales
- Swiss Valley Reservoir
- Sydallt
- Sydney Chappell
- Sydney Darvell
- Sygun Copper Mine
- Sylfaen railway station
- Synod of Brefi
- Synod of Victory
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- T. Glynne Davies
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- T. Ifor Rees
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- Table Tennis Association of Wales
- Taeog
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- Taff Merthyr
- Tafod y Ddraig
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- Taine Basham
- Tal-y-bont, Dyffryn Ardudwy
- Talacre
- Talacre railway station
- Talar Wen Quarry
- Talerddig railway station
- Talgarreg
- Talgarth Festival
- Talley
- Talley Road Halt railway station
- Talog, Carmarthenshire
- Talsarn
- Talsarnau
- Talsarnau railway station
- Talwrn
- Talybolion
- Talybont, Bangor
- Talybont-on-Usk railway station
- Talybont railway station
- Talyllyn Junction railway station
- Tan-y-Bwlch, Aberystwyth
- Tan-y-Bwlch, Maentwrog
- Tan-y-groes
- Tandinas
- Tanygrisiau railway station
- Tarian Rhyddid a Dymchwelydd Gormes
- Tarren y Gesail
- Tarrenhendre
- Tasker Milward Voluntary Controlled School
- Tata Steel United F.C.
- Tathana
- Tatws Pum Munud
- Taylor Bevan
- Taylor Davies
- Tecwyn Ifan
- Tecwyn Jones
- Ted Regan (footballer)
- Teddy Pugh
- Teddy Williams (rugby union)
- Tegwen Malik
- Telpyn Point
- Telyn y Plant
- Temple of Peace, Cardiff
- Templeton railway station
- Temporary licence
- Tenby Castle
- Tenby Observer
- Tennis Wales
- Tephroseris integrifolia subsp. maritima
- Terence Robbins
- Teresa Rees
- Terry Evans (footballer, born 1976)
- Terry Monaghan
- Terry Perdue
- Terry Shaw (rugby union)
- Terry Vaughan
- Teulyddog
- Teyrnon
- That's Swansea Bay
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- The Acid Elephant
- The Adventures and Vagaries of Twm Shon Catti
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- The Albert Hall, Llandrindod Wells
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- The Battle to the Weak
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- The Duskeys
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- The Flash (lake)
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- The Hennessys
- The Invader (novel)
- The Journal of Welsh Religious History
- The Larches, Monmouthshire
- The Life and Times of David Lloyd George
- The Lodge Halt railway station
- The Lords of Afan
- The Mayhill Hotel
- The Merthyr Telegraph
- The Miners' Next Step
- The Mule (river)
- The Myvyrian Archaiology of Wales
- The NEON
- The Narth
- The Newport Review and Monmouthshire Register
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- The Old Bell Museum
- The Oval, Caernarfon
- The Oxford Book of Welsh Verse in English
- The Pembrokeshire Herald and General Advertiser
- The People The Poet
- The Pin Mill
- The Principality (newspaper)
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- The Riverside Hotel, Monmouth
- The Society of Legal Scholars
- The Soldier and the Gentlewoman
- The Take (Welsh band)
- The Treasury (periodical)
- The Visitors' List and Guide
- The Weekly Mail
- The Welchman
- The Welsh History Review
- The Welshman (newspaper)
- The Wern
- The Wolves (Bristol Channel)
- Theatr Brycheiniog
- Theo Bevacqua
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- Theophilus Feild
- Thicker than Water (1993 film)
- Third Floor Gallery
- Thomas Babington Jones
- Thomas Bailey (footballer, born 1904)
- Thomas Banks (priest)
- Thomas Bayley Hughes
- Thomas Beach (poet)
- Thomas Bek (Bishop of St Davids)
- Thomas Bevan (priest)
- Thomas Beynon (archdeacon of Cardigan)
- Thomas Bird (bishop)
- Thomas Boden
- Thomas Britten
- Thomas Bryan (Welsh footballer)
- Thomas Buckland
- Thomas Burnett (footballer)
- Thomas Carroll Group
- Thomas Cathern
- Thomas Charles Edwards
- Thomas Cordes
- Thomas Dafydd
- Thomas Davies (bowls)
- Thomas Davies (footballer, born 1865)
- Thomas Duncombe Dee
- Thomas Evans (archdeacon of Carmarthen)
- Thomas Fothergill (ironmaster)
- Thomas Gamage
- Thomas Griffiths (priest)
- Thomas Hache II
- Thomas Haffield
- Thomas Hopkins (gymnast)
- Thomas Hughes (bishop)
- Thomas Huyck
- Thomas Jenkins (footballer)
- Thomas John Thomas
- Thomas Jones, Baron Maelor
- Thomas Jones (librarian)
- Thomas Lewis (Welsh politician)
- Thomas Lewis (footballer)
- Thomas Lloyd (Dean of Bangor)
- Thomas Lloyd (bishop)
- Thomas Lloyd (lexicographer)
- Thomas McCarthy (footballer)
- Thomas Meyrick
- Thomas Myddelton (Lord Mayor of London)
- Thomas Parry (writer)
- Thomas Parry Library
- Thomas Parry Pryce
- Thomas Phillips (educational benefactor)
- Thomas Phillips Price
- Thomas Price (Baptist minister)
- Thomas Prichard (priest, born 1577)
- Thomas Prichard (priest, born c. 1591)
- Thomas Runcorn
- Thomas Stanoe
- Thomas Thomas (boxer)
- Thomas Thomas (harpist)
- Thomas Vaughan (footballer)
- Thomas Watson (Bishop of St Davids)
- Thomas Williams (dean of Bangor)
- Thomas Williams (dean of Llandaff)
- Thomas Williams (priest and translator)
- Thomas Woods (rugby)
- Thomas Wyndham (of Dunraven Castle)
- Thomas brothers (mediums)
- Thomastown, Rhondda Cynon Taf
- Thornhill, Torfaen
- Threatmantics
- Three Cocks Junction railway station
- Tiaan Thomas-Wheeler
- Tiger Please
- Tim Fauvel
- Timeline of Llanelli history
- Tiny Rebel
- Tipit
- Tir-Phil
- Tir-Phil railway station
- Tir Cymen
- Tir Iarll
- Tir Newydd
- Tirabad
- Tircoed forest village
- Tirymynach
- Titus Lewis
- Titus Zhenje
- Tivonge Rushesha
- Tivyside Advertiser
- Tom Bevan (cricketer)
- Tom Bryant (harpist)
- Tom Davies (rugby union, born 1986)
- Tom Davies (rugby union, born 1993)
- Tom Edwards (footballer, born 1906)
- Tom Evans (footballer, born 1903)
- Tom Giffard
- Tom Hewitt (footballer)
- Tom Ingleby
- Tom Macdonald (writer)
- Tom Richards (athlete)
- Tom Rogers (rugby union)
- Tom Singh
- Tom Sparrow (Welsh footballer)
- Tom Williams (rugby union, born 1991)
- Tom Williams (rugby union, born 1996)
- Tomas ap Rhodri
- Tomi Lewis
- Tommy Lewis (footballer)
- Tommy Matthias
- Tommy Mills (footballer)
- Tommy Weale
- Ton Llwyd Halt railway station
- Ton Pentre railway station
- Tonfanau
- Tonmawr
- Tonmawr Junction railway station
- Tony Adams (actor)
- Tony Clement (rugby union)
- Tony Conran
- Tony Copsey
- Tony Curtis (Welsh poet)
- Tony Day
- Tony Fisher (rugby)
- Tonypandy railway station
- Tonyrefail railway station
- Top-y-Fron Hall
- Tor y Foel
- Torin Myhill
- Torllwyn
- Towyn
- Trac: Music Traditions Wales
- Traed mewn cyffion
- Traethodl
- Trallong
- Trallwn
- Transactions of the Honourable Society of Cymmrodorion
- Transport (Wales) Act 2006
- Trap, Carmarthenshire
- Trawsfynydd Lake Halt railway station
- Trawsnant
- Tre-Castell
- Tre-Wen
- Tre-Ysgawen
- Trearddur Bay United F.C.
- Treasons in Wales Act 1540
- Treaty of Pipton
- Trebanog F.C.
- Trebanos (electoral ward)
- Trebedw
- Treberth
- Treboeth
- Trecastell
- Trecastle
- Trecenydd
- Trecynon Halt railway station
- Tredegar House Country Park
- Tredegar Park, Newport
- Tredodridge
- Treetops Shooting Ground
- Trefarthen
- Trefawr Formation
- Trefawr Track
- Trefdraeth
- Trefeglwys
- Trefeiddan Moor
- Trefeinon railway station
- Trefeurig
- Treffynnon, Pembrokeshire
- Treflys
- Trefnant
- Trefnant railway station
- Trefor, Anglesey
- Trefor, Gwynedd
- Trefor Morris
- Treforest Halt railway station
- Treforest High Level railway station
- Treforgan
- Tregare
- Tregaron Turfs F.C.
- Tregarth railway station
- Tregele
- Tregroes
- Trehafod railway station
- Treharris
- Treharris Athletic Western F.C.
- Treherbert BGC
- Treiorwerth Formation
- Trelawnyd
- Trelawnyd and Gwaenysgor
- Trelech
- Trelewis
- Trelewis Halt railway station
- Trelewis Welfare F.C.
- Trelogan
- Tremadog Bay
- Tremorfa
- Treowen Halt railway station
- Trerhyngyll
- Trethomas railway station
- Tretower
- Treuddyn
- Trevalyn Hall
- Trevethin
- Trevor railway station
- Trewern
- Trewyddfa
- Trezza Azzopardi
- Triffyn Farfog
- Triffyn ap Rhain
- Trimsaran Road railway station
- Trinant
- Troed-y-rhiw-Sion
- Troed-y-rhiw railway station
- Troed-yr-hen-riw
- Troed y Rhiw
- Troedrhiwffenyd
- Troedyraur
- Troedyrhifuwch Halt railway station
- Trowbridge, Cardiff
- Trum y Ddysgl
- Trum y Gwragedd
- Trwyn yr Wylfa
- Trychrug
- Tryfil
- Tu Hwnt i'r Bont
- Tudor Brewery
- Tudor Martin
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- Tudur ap Gwyn Hagr
- Tudwal Gloff
- Tusker Rock
- Twm Morys
- Twmpa
- Twmpath
- Two Locks
- Twrcelyn
- Twrcelyn Rural District
- Twyn-yr-Odyn
- Ty'n-y-graig
- Ty'n-yr-eithin
- Ty-coch Halt railway station
- Ty Du Moor
- Ty Formation
- Ty Glas railway station
- Ty Mawr Burial Chamber
- Tybroughton
- Tycoch
- Tyddyn Bridge Halt railway station
- Tyddyn Dai
- Tydfil Wildcats Rugby League
- Tyfanog
- Tyfei
- Tygwyn railway station
- Tyla Garw
- Tylacoch Halt railway station
- Tylorstown railway station
- Tylwch
- Tylwch railway station
- Tyn-y-Coed Farmhouse
- Tyn-y-Gongl
- Tyn-y-nant
- Tyncelyn
- Tyneio
- Tynewydd, Ceredigion
- Tynewydd Colliery disaster
- Tynycwm Halt railway station
- Tywyn railway station
- Tywysog
- Tŵr Mawr Lighthouse
- Tŷ-Newydd, Ceredigion
- Tŷ-llwyd
- Tŷ Canol National Nature Reserve
- Tŷ Croes
- Tŷ Glyn
- Tŷ Siamas
- Ucheldre Centre
- Udgorn Seion
- Umbrafel
- Unbennaeth Prydain
- Undeb Cenedlaethol Athrawon Cymru
- Underwater Hockey Wales
- Undy A.F.C.
- Ungoed Jacob
- Union Bank (Pembrokeshire)
- United Nations Association Wales
- University of Wales Press
- Upland Arms
- Upper Bank railway station
- Upper Borth
- Upper Chapel, Powys
- Upper Church Village
- Upper Clydach River
- Upper Cwmbran
- Upton Chapel
- Uriah Goodwin
- Usk Hundred
- Usk Inlier
- Usk RFC
- Usk Reservoir
- Uskmouth
- Uskside Foundry
- Ustig
- Uwch Conwy
- Uwchaled Rural District
- Vale of Clwyd and Conwy Football League
- Vale of Conwy Football League
- Vale of Ffestiniog
- Vale of Grwyney
- Vale of Montgomery
- Valerie Mullins
- Valeways Millennium Heritage Trail
- Valley, Anglesey
- Valley Rural District
- Valley Station Signal Box, Anglesey
- Valleys Radio
- Van, Caerphilly
- Van, Llanidloes
- Van Railway
- Varteg
- Vaughan Rees
- Vaughan Thomas (rowing)
- Velindre University NHS Trust
- Velothon Wales
- Venissa Head
- Vic Perrins
- Vicarage Crossing Halt railway station
- Vicarage Field, Aberystwyth
- Vicarage Meadows
- Vicarage Moss
- Victor Erle Nash-Williams
- Victoria, Newport
- Victoria Hotel, Menai Bridge
- Victoria Road, Port Talbot
- Vincent Lloyd-Jones
- Violet Skies
- Vivian Teed
- Voco St David's Cardiff Hotel
- W. J. Gruffydd (Elerydd)
- WWT Llanelli Wetlands Centre
- Waen
- Wainfelin
- Wales Ape and Monkey Sanctuary
- Wales Challenge
- Wales Council for Voluntary Action
- Wales Golf
- Wales International Film Festival
- Wales Live
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- Wales This Week
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- Wales men's national field hockey team
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- Wales on the Menu
- Wales women's national basketball team
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- Wales women's national rugby sevens team
- Wales women's national under-17 football team
- Wallis Moor
- Wallis Walters
- Wallog
- Walter Davies (footballer)
- Walter Hugh Roberts
- Walter Jones (priest)
- Walter Morgan (priest)
- Walter Vaughan (MP for Carmarthenshire)
- Walter Wilkins (1741–1828)
- Walter Wilkins (d. 1840)
- Walter Williams (rugby union)
- Walter of Gloucester
- Walterston
- Walton, Powys
- Waroch I
- Watcyn Clywedog
- Watcyn Thomas
- Waterloo, Caerphilly
- Waterloo Bridge, Betws-y-Coed
- Waterloo Halt railway station
- Waterloo Rovers F.C.
- Waterton, Bridgend
- Watkin Herbert
- Watkin William Price
- Watkin Williams (Flint MP)
- Watkin Williams (bishop)
- Watton (B&MR) railway station
- Wattstown Platform railway station
- Wattsville F.C.
- Watwick Point Beacon
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- List of Cyfraith Hywel manuscripts
- List of Cymru Premier champions
- List of EFL Championship hat-tricks
- List of English and Welsh cricket league clubs
- List of Gavin & Stacey episodes
- List of Great Britain national rugby league team players
- List of High Court judges of England and Wales
- List of MPs for constituencies in Wales (1987–1992)
- List of MPs for constituencies in Wales (2010–2015)
- List of MPs for constituencies in Wales (2019–2024)
- List of MPs for constituencies in Wales (2024–present)
- List of MPs for constituencies in Wales (February 1974–October 1974)
- List of MPs for constituencies in Wales (October 1974–1979)
- List of Michelin-starred restaurants in Wales
- List of National Trust properties in Wales
- List of Newport County A.F.C. managers
- List of Newport County A.F.C. players
- List of Newport County A.F.C. records and statistics
- List of Newport County A.F.C. seasons
- List of North Wales Crusaders seasons
- List of Ramsar sites in Wales
- List of Roman-to-modern scheduled monuments in Carmarthenshire
- List of Roman-to-modern scheduled monuments in Ceredigion
- List of Roman-to-modern scheduled monuments in Gwynedd
- List of Roman-to-modern scheduled monuments in Pembrokeshire
- List of SSSIs in Clwyd
- List of SSSIs in East Gwynedd
- List of SSSIs in Mid & South Glamorgan
- List of SSSIs in West Glamorgan
- List of SSSIs in West Gwynedd
- List of Senedd elections
- List of Sherlock episodes
- List of Sites of Special Scientific Interest in Blaenau Gwent
- List of Sites of Special Scientific Interest in Bridgend County Borough
- List of Sites of Special Scientific Interest in Caerphilly County Borough
- List of Sites of Special Scientific Interest in Cardiff
- List of Sites of Special Scientific Interest in Carmarthenshire
- List of Sites of Special Scientific Interest in Gwent
- List of Sites of Special Scientific Interest in Merthyr Tydfil County Borough
- List of Sites of Special Scientific Interest in Monmouthshire
- List of Sites of Special Scientific Interest in Pembrokeshire
- List of Sites of Special Scientific Interest in Powys
- List of Sites of Special Scientific Interest in Rhondda Cynon Taf
- List of Six Nations Championship Player of the Championship winners
- List of Special Areas of Conservation in Wales
- List of Stella (British TV series) episodes
- List of Swansea City A.F.C. seasons
- List of Talyllyn Railway rolling stock
- List of UK Parliament constituencies in Wales
- List of UK dialling codes covering Wales
- List of United Kingdom locations
- List of United Kingdom locations: Bab-Bal
- List of United Kingdom locations: Bea-Bem
- List of United Kingdom locations: Ben-Bez
- List of United Kingdom locations: Thi-Thw
- List of United Kingdom locations: Woof-Wy
- List of United Kingdom locations: X-Z
- List of Vale of Rheidol Railway rolling stock
- List of Wales Minor Counties Cricket Club List A players
- List of Wales Minor Counties Cricket Club grounds
- List of Wales international footballers born outside Wales
- List of Wales rugby union footballers killed in the World Wars
- List of Wales women's international footballers
- List of Wales women's national rugby union team matches
- List of Welsh-language television channels
- List of Welsh-speaking politicians
- List of Welsh AMs/MSs with the shortest service
- List of Welsh Cup finals
- List of Welsh Highland Railway Ltd rolling stock
- List of Welsh Highland Railway rolling stock
- List of Welsh Premier League seasons
- List of Welsh architects
- List of Welsh boxing champions
- List of Welsh breeds
- List of Welsh dishes
- List of Welsh films
- List of Welsh historical documents
- List of Welsh inventors
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- List of Welsh principal areas
- List of Welsh rugby union clubs
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- List of Welsh television programmes
- List of Welsh towns twinned with a Breton town
- List of World Heritage Sites in Wales
- List of Wrexham A.F.C. records and statistics
- List of Wrexham A.F.C. seasons
- List of academics of the University of Wales, Lampeter
- List of acts and measures of Senedd Cymru
- List of acts of Senedd Cymru from 2021
- List of acts of Senedd Cymru from 2022
- List of acts of Senedd Cymru from 2023
- List of acts of the National Assembly for Wales and acts of Senedd Cymru from 2020
- List of acts of the National Assembly for Wales from 2012
- List of acts of the National Assembly for Wales from 2013
- List of acts of the National Assembly for Wales from 2014
- List of acts of the National Assembly for Wales from 2015
- List of acts of the National Assembly for Wales from 2016
- List of acts of the National Assembly for Wales from 2017
- List of acts of the National Assembly for Wales from 2018
- List of acts of the National Assembly for Wales from 2019
- List of alumni of the University of Wales, Lampeter
- List of ancient Celtic peoples and tribes
- List of archdeacons in the Church in Wales
- List of battalions of the South Wales Borderers
- List of bays of Wales
- List of birds of Wales
- List of buildings and structures in Portmeirion
- List of buildings and structures in Swansea
- List of bus stations in Wales
- List of by-elections to the Senedd
- List of carillons of the British Isles
- List of churches in Wrexham County Borough
- List of city and town halls in Wales
- List of committees of the Senedd
- List of communities in Anglesey
- List of communities in Blaenau Gwent
- List of communities in Bridgend County Borough
- List of communities in Cardiff
- List of cricket grounds in England and Wales
- List of crossings of the River Clwyd
- List of crossings of the River Dee, Wales
- List of cultural venues in Swansea
- List of deans of St Asaph
- List of direct grant grammar schools
- List of dune systems of Wales
- List of electoral wards in Bridgend County Borough
- List of electoral wards in Gwynedd
- List of electoral wards in Merthyr Tydfil County Borough
- List of electoral wards in Mid Glamorgan
- List of electoral wards in Newport, Wales
- List of electoral wards in Pembrokeshire
- List of electoral wards in Powys
- List of electoral wards in Rhondda Cynon Taf
- List of electoral wards in Swansea
- List of electoral wards in Wales
- List of electoral wards in Wrexham County Borough
- List of estuaries of Wales
- List of female Police and Crime Commissioners
- List of female members of the Senedd
- List of festivals in Wales
- List of food festivals in Wales
- List of football clubs in England and Wales by year formed
- List of football seasons involving Cefn Druids and its predecessor clubs
- List of former cathedrals in Great Britain
- List of fossiliferous stratigraphic units in Wales
- List of further education colleges in Wales
- List of gardens in Wales
- List of geological faults of Wales
- List of hillforts in Monmouthshire
- List of hillforts in Wales
- List of international men's cricket grounds in England and Wales
- List of invasive non-native species in England and Wales
- List of law enforcement agencies in England and Wales
- List of leaders of Welsh councils
- List of local nature reserves in Wales
- List of lord lieutenants of Anglesey
- List of measures of the National Assembly for Wales from 2008
- List of measures of the National Assembly for Wales from 2009
- List of measures of the National Assembly for Wales from 2010
- List of measures of the National Assembly for Wales from 2011
- List of monarchs of Powys
- List of mountain passes of Wales
- List of movements in Wales
- List of people associated with Penarth
- List of people from Newport
- List of people from Swansea
- List of places along Wales Coast Path
- List of places in Anglesey (categorised)
- List of places in Blaenau Gwent
- List of places in Bridgend County Borough
- List of places in Carmarthenshire
- List of places in Carmarthenshire (categorised)
- List of places in Conwy County Borough
- List of places in Conwy County Borough (categorised)
- List of places in Denbighshire
- List of places in Denbighshire (categorised)
- List of places in Flintshire
- List of places in Flintshire (categorised)
- List of places in Gwynedd (categorised)
- List of places in Merthyr Tydfil County Borough
- List of places in Monmouthshire
- List of places in Neath Port Talbot
- List of places in Neath Port Talbot (categorised)
- List of places in Newport
- List of places in Powys
- List of places in Powys (categorised)
- List of places in Rhondda Cynon Taf (categorised)
- List of places in Swansea
- List of places in Swansea (categorised)
- List of places in Torfaen
- List of places in Wrexham County Borough
- List of places in the Vale of Glamorgan
- List of places on the Creuddyn peninsula
- List of poor law unions in Wales
- List of ports and harbours in Wales
- List of ports in Great Britain
- List of prehistoric scheduled monuments in Carmarthenshire
- List of prehistoric scheduled monuments in Ceredigion
- List of prehistoric scheduled monuments in Gwynedd (former Caernarvonshire)
- List of prehistoric scheduled monuments in Gwynedd (former Merionethshire)
- List of prehistoric scheduled monuments in Powys (Brecknockshire)
- List of prehistoric scheduled monuments in south Pembrokeshire
- List of public art in Blaenau Gwent
- List of public art in Cardiff
- List of public art in Carmarthenshire
- List of public art in Ceredigion
- List of public art in Conwy County Borough
- List of public art in Denbighshire
- List of public art in Flintshire
- List of public art in Gwynedd
- List of public art in Merthyr Tydfil County Borough
- List of public art in Monmouthshire
- List of public art in Newport, Wales
- List of public art in Torfaen
- List of public art in Wrexham County Borough
- List of public art in the Vale of Glamorgan
- List of public art on Anglesey
- List of quarries served by the Ffestiniog Railway
- List of reservoirs in the United Kingdom
- List of rulers of Gwynedd
- List of rural and urban districts in Wales in 1973
- List of rural districts formed in England and Wales 1894–1974
- List of scheduled monuments in Anglesey
- List of scheduled monuments in Blaenau Gwent
- List of scheduled monuments in Bridgend County Borough
- List of scheduled monuments in Caerphilly County Borough
- List of scheduled monuments in Conwy County Borough
- List of scheduled monuments in Denbighshire
- List of scheduled monuments in Flintshire
- List of scheduled monuments in Merthyr Tydfil County Borough
- List of scheduled monuments in Monmouthshire
- List of scheduled monuments in Neath Port Talbot
- List of scheduled monuments in Newport
- List of scheduled monuments in Rhondda Cynon Taf
- List of scheduled monuments in Swansea
- List of scheduled monuments in Torfaen
- List of scheduled monuments in Wrexham County Borough
- List of scheduled monuments in the Vale of Glamorgan
- List of schools in Anglesey
- List of schools in Blaenau Gwent
- List of schools in Bridgend
- List of schools in Caerphilly
- List of schools in Cardiff
- List of schools in Carmarthenshire
- List of schools in Ceredigion
- List of schools in Conwy
- List of schools in Denbighshire
- List of schools in Flintshire
- List of schools in Gwynedd
- List of schools in Merthyr Tydfil County Borough
- List of schools in Monmouthshire
- List of schools in Neath Port Talbot
- List of schools in Newport
- List of schools in Pembrokeshire
- List of schools in Powys
- List of schools in Rhondda Cynon Taf
- List of schools in Swansea
- List of schools in Torfaen
- List of schools in Wrexham County Borough
- List of schools in the Vale of Glamorgan
- List of settlements in Anglesey by population
- List of shear zones of Great Britain
- List of shopping arcades in Cardiff
- List of stadiums in Wales by capacity
- List of standardised Welsh place-names in Monmouthshire
- List of stations and halts on the Ffestiniog Railway
- List of stations and halts on the Talyllyn Railway
- List of stations and halts on the Welsh Highland Railway
- List of statutory instruments of the Welsh Assembly, 1999
- List of statutory instruments of the Welsh Assembly, 2000
- List of statutory instruments of the Welsh Assembly, 2001
- List of statutory instruments of the Welsh Assembly, 2002
- List of statutory instruments of the Welsh Assembly, 2003
- List of statutory instruments of the Welsh Assembly, 2004
- List of statutory instruments of the Welsh Assembly, 2005
- List of statutory instruments of the Welsh Assembly, 2006
- List of tallest buildings in Cardiff
- List of think tanks in Wales
- List of titles and honours of Charles III
- List of twin towns and sister cities in Wales
- List of uncapped British & Irish Lions rugby union players
- List of urban districts formed in England and Wales 1896–1974
- List of vales in England and Wales
- List of venues in Neath Port Talbot
- List of windmills in Anglesey
- List of windmills in Wales
- List of works by Dylan Thomas
- List of years in Wales
- List of youth hostels in England and Wales
- Listed buildings in Grangetown, Cardiff
- Listed buildings in Llanelli
- Listed buildings in Penarth
- Lists of MPs for constituencies in Wales
- Llŷr (given name)
- Local boards formed in England and Wales 1848–1894
- Locations in the United States with a Welsh name
- Lord Lieutenant of Brecknockshire
- Lord Lieutenant of Caernarvonshire
- Lord Lieutenant of Cardiganshire
- Lord Lieutenant of Carmarthenshire
- Lord Lieutenant of Denbighshire
- Lord Lieutenant of Dyfed
- Lord Lieutenant of Flintshire
- Lord Lieutenant of Glamorgan
- Lord Lieutenant of Gwent
- Lord Lieutenant of Gwynedd
- Lord Lieutenant of Merionethshire
- Lord Lieutenant of Monmouthshire
- Lord Lieutenant of Montgomeryshire
- Lord Lieutenant of Pembrokeshire
- Lord Lieutenant of Radnorshire
- Lord Lieutenant of South Glamorgan
- Lords of Cemais
- Meyrick family
- National nature reserves in Wales
- Owen (name)
- Plaid Cymru election results
- Powell (surname)
- Regional member changes to the Senedd
- Registered historic parks and gardens in Anglesey
- Registered historic parks and gardens in Bridgend County Borough
- Registered historic parks and gardens in Caerphilly County Borough
- Registered historic parks and gardens in Carmarthenshire
- Registered historic parks and gardens in Ceredigion
- Registered historic parks and gardens in Conwy County Borough
- Registered historic parks and gardens in Flintshire
- Registered historic parks and gardens in Gwynedd
- Registered historic parks and gardens in Merthyr Tydfil County Borough
- Registered historic parks and gardens in Neath Port Talbot
- Registered historic parks and gardens in Newport
- Registered historic parks and gardens in Pembrokeshire
- Registered historic parks and gardens in Powys
- Registered historic parks and gardens in Rhondda Cynon Taf
- Registered historic parks and gardens in Swansea
- Registered historic parks and gardens in Wrexham County Borough
- Registered historic parks and gardens in the Vale of Glamorgan
- Rhun (Welsh given name)
- Scheduled monuments in Pembrokeshire
- Shadow Secretary of State for Wales
- Sheriff of Merionethshire
- Timeline of ITV in Wales
- Timeline of prehistoric Britain
- Timeline of radio in Wales
- Timeline of television in Wales
- Timeline of the COVID-19 pandemic in Wales (2021)
- Tudor (name)
- Vaughan (surname)
- Wales national football team manager
- Wales national football team records and statistics
- Wales national football team results
- Wales national football team results (2000–2019)
- Wales national football team results (2020–present)
- Wales women's national football team results (2020–present)
- Welsh Woman of the Year
- Wrexham County Borough Council elections
- 1942 in Wales
- 1974 in Wales
- 1976 in Wales
- 2023–24 FAW Women's Cup
- Fardd
- Frontbench Team of Kirsty Williams
- Grade II listed buildings in Acton, Wrexham
- Grade II listed buildings in Bronington
- Grade II listed buildings in Broughton, Wrexham
- Grade II listed buildings in Ceiriog Ucha
- Grade II listed buildings in Chirk
- Grade II listed buildings in Coedpoeth
- Grade II listed buildings in Erbistock
- Grade II listed buildings in Esclusham
- Grade II listed buildings in Glyntraian
- Grade II listed buildings in Gresford
- Grade II listed buildings in Gwersyllt
- Grade II listed buildings in Hanmer, Wrexham
- Grade II listed buildings in Holt, Wrexham
- Grade II listed buildings in Llangollen Rural
- Grade II listed buildings in Llansantffraid Glyn Ceiriog
- Grade II listed buildings in Maelor South
- Grade II listed buildings in Marchwiel
- Grade II listed buildings in Minera
- Grade II listed buildings in Offa, Wrexham
- Grade II listed buildings in Overton-on-Dee
- Grade II listed buildings in Rhosddu
- Grade II listed buildings in Rossett
- Grade II listed buildings in Ruabon
- Grade II listed buildings in Sesswick
- Grade II listed buildings in Willington Worthenbury
- Grade II listed buildings in Wrexham County Borough
- Idwal
- List of Sites of Special Scientific Interest in Ceredigion
- List of communities in Caerphilly County Borough
- List of communities in Carmarthenshire
- List of foreign Cymru Premier players
- List of hundreds of Wales
- List of public art in Swansea
- List of standardised Welsh place-names
- List of standardised Welsh place-names in Anglesey
- List of standardised Welsh place-names in Blaenau Gwent
- List of standardised Welsh place-names in Bridgend County Borough
- List of standardised Welsh place-names in Caerphilly County Borough
- List of standardised Welsh place-names in Cardiff
- List of standardised Welsh place-names in Carmarthenshire
- List of standardised Welsh place-names in Ceredigion
- List of standardised Welsh place-names in Conwy County Borough
- List of standardised Welsh place-names in Denbighshire
- List of standardised Welsh place-names in Flintshire
- List of standardised Welsh place-names in Gwynedd
- List of standardised Welsh place-names in Merthyr Tydfil County Borough
- List of standardised Welsh place-names in Neath Port Talbot
- List of standardised Welsh place-names in Newport
- List of standardised Welsh place-names in Pembrokeshire
- List of standardised Welsh place-names in Powys
- List of standardised Welsh place-names in Rhondda Cynon Taf
- List of standardised Welsh place-names in Swansea
- List of standardised Welsh place-names in Torfaen
- List of standardised Welsh place-names in Wrexham County Borough
- List of standardised Welsh place-names in the Vale of Glamorgan
- Llywelyn
- Members of the 2nd National Assembly for Wales
- Registered historic parks and gardens in Denbighshire
- Swansea City A.F.C. league record by opponent
- Wales women's national football team results (1990–1999)
- Wales women's national football team results (2000–2009)
- Wales women's national football team results (2010–2019)
- Wynne-Jones
- Bankruptcy in England and Wales
- Government of Wales
- List of Wales-related topics
- List of Welsh principal areas by area
- Literature of Wales
- River Tywi
- Wales-only laws
- Welsh national identity
- Afan Valley
- Bala, Wales
- Cardiganshire
- Carmarthenshire County Council, 1889–1974
- Cleddau Estuary
- Conwy Morfa
- Dinas Head
- Dinorwic Quarry
- District of Radnorshire
- Dydd Santes Dwynwen
- English rule in Wales
- Gorsedd
- HealthWise Wales
- Lead mining in Wales
- List of Hewitts and Nuttalls in Wales
- List of Marilyns in Wales
- List of SSSIs in Ceredigion
- List of Sites of Special Scientific Interest in West Gwynedd
- List of Welsh principal areas by population
- Medical schools in Wales
- Paulinus of Wales
- Pembrokeshire County Council, 1889–1974
- Police forces of Wales
- RAF Sealand
- Radio Maldwyn
- Schedule 5 of the Government of Wales Act 2006
- Sir Watkin Williams-Wynn, 11th Baronet
- Socialist Party Wales
- 1896 Rhondda Urban District Council election
- A4086 road
- Aberaeron Broth
- Aberdare bus station
- Aberlerry
- Abernant, Rhondda Cynon Taff
- Abred
- Administrative Court (England and Wales)
- Afon Dyfrdwy (River Dee) SSSI
- Afon Morlais, Pembrokeshire
- Afon Rheidol ger Capel Bangor
- Alaw, Anglesey
- Albert Town, Pembrokeshire
- Allt-y-gest
- Allt Wen a Traeth Tanybwlch
- Amlwch Urban District
- Ashfield, Carmarthenshire
- Assach
- Attorney General to the Prince of Wales
- Axton Hill
- Bala - Llanelidan Fault
- Baltic and Tyle'r-bont Quarries
- Bari Goddard
- Barmouth Ferry railway station
- Baron Hill Park
- Beach Halt railway station
- Bell Insurance
- Bethesda, Wales
- Betws-y-Coed Urban District
- Blaen-y-cwm Wood
- Blaen Cilieni
- Blaen Nedd
- Blaen y Wergloedd Bog
- Bolahaul
- Borth – Clarach
- Brechfa Pool
- Bridgend bus station
- Britannic Empire
- Bron Aberanerch
- Bronnant Fault Zone
- Bryn-bwch
- Bryn-minceg
- Bryn Eglwys Fault
- Cadafael Cadomedd ap Cynfeddw
- Cadle
- Cadrawd Calchfynydd
- Cae Bryn-tywarch
- Cae Comin Coch
- Cae Ffos-yr-odyn
- Cae Llety-yr-efail
- Cae Penmaes
- Cae Pwll-y-bo
- Cae Ty-hen
- Caeau Ardwyn
- Caeau Crug Bychan, Ty Gwyn a Llwyn Ysgaw
- Caeau Cwmcoynant
- Caeau Fferm
- Caeau Llwyn Gwrgan
- Caeau Ton-y-fildre
- Caeau Ty-mawr
- Caeo
- Caer Dathyl
- Camddwr, Wye
- Camp Project Wales
- Capel Coch, Maenaddwyn
- Capel Gwyn, Bryngwran
- Cardiff East Deanery
- Cardiff Rift
- Cardiff West Deanery
- Carningli hillfort
- Carreg yr Halen
- Castellior
- Cathedine Common Wood
- Cefn Rofft
- Clarbeston Road
- Coaching stock of the Vale of Rheidol Railway
- Coed Allt Craig Arth
- Coed Dyrysiog
- Coed Llys-Aled
- Coed Mawr – Blaen-Car
- Coed Mynachlog-fawr
- Coed Nant-y-merddyn-uchaf
- Coed Nant Llolwyn
- Coed Trefraith
- Coed Tyddyn-du
- Coed Ynys-Faen
- Coed a Gweunydd Gilfach-gwyddil
- Coedydd Derw Elwy
- Coedydd a Cheunant Rheidol (Rheidol Woods & Gorge)
- Coedydd a Chorsydd Aber Teifi (Teifi Estuary Woodlands & Marshes)
- Coedydd ac Ogofau Elwy a Meirchion
- Comin Esgairmaen
- Comin Silian
- Comins Capel Betws
- Controversy of the Prince of Wales title
- Cors Bwlch-y-baedd
- Cors Caranod
- Cors Gorsgoch
- Cors Penbwlch
- Cors y Sychnant
- Corsydd Nug a Merddwr
- Craig-y-Llyn
- Craig y Rhiwarth
- Craigyfulfran & Clarach
- Creigiau Aberarth-Morfa
- Creigiau Cwm-Ceriw a Ffos-las (Morfa Bychan)
- Creigiau Pen y graig
- Cuba Cuba (band)
- Cwar yr Ystrad a Cwar Blaen dyffryn
- Cwm Caner Mawr
- Cwm Level Park
- Cwm Llyfnant
- Cwm Prysor railway station
- Cwm Teigl Halt railway station
- Cwm Ystwyth
- Cwmamman Urban District
- Cwmsyfiog railway station
- Cyndeyrn
- Cynfyn ap Gwerystan
- Dig-N-Dug
- Duffws railway station (Festiniog and Blaenau Railway)
- Dyrnwyn
- Edeirnion Rural District
- Eduqas
- Elephant (brand)
- Energlyn
- Engedi, Bryngwran
- Erwood Dingle
- Estuary Halt railway station
- Evan Vaughan Anwyl
- Fairbourne railway station (Fairbourne Railway)
- Festiniog & Blaenau Railway
- Ffestiniog railway station
- Ffordd Coed Dol-Fawr
- Figyn Blaen-Brefi
- Further Education Funding Council for Wales
- Garth-eryr
- Garth Celyn
- Geoffrey D. Lloyd
- Glan-yr-afon, Llangoed
- Glanfedw
- Glanrhocca
- Gorfynydd
- Goytre (Monmouthshire)
- Greenhill transmitting station
- Gro Ty'n yr Helyg
- Gro Ystwyth
- Guardian of the Valleys
- Gwaun Garthenor a Llanio-Isaf
- Gwaun Pen-lan
- Gwaun Ystrad Caron
- Gweunydd Dyffryn Nedd
- Gweunydd Pendinas
- Gyfartha
- Halfway Quarry
- Harrison Powell
- Hayscastle Cross
- Head Radio
- Heads of the Valleys Deanery
- Hen Berth Fron-Badarn a Phersondy
- Hendre, Llangedwyn
- History of Bangor City F.C.
- Horton, Swansea
- Hunting of Twrch Trwyth
- Illtyd Pools
- Institute of Grassland and Environmental Research
- James James (Monmouth)
- Jamie Shaw (singer)
- John Porter (archdeacon of Llandaff)
- Johnstown, Carmarthenshire
- Joseph Peers Memorial Clock Tower
- Draft:Kilgetty/Begelly, Pembrokeshire
- Laugharne Township
- List of King George V Playing Fields in Vale of Glamorgan
- List of King George V Playing Fields in Wales
- List of Marcher lordships
- List of Nuttall mountains in Wales
- List of SSSIs in Montgomery
- List of SSSIs in Preseli & South Pembrokeshire
- List of Sheriffs of Meirionnydd in the 19th century
- List of Sites of Special Scientific Interest in Carmarthen & Dinefwr
- List of Sites of Special Scientific Interest in Mid & South Glamorgan
- List of Wales national rugby union team players
- List of Welsh boxing world champions
- List of Welsh principal areas by population density
- List of devolved matters in Wales
- List of local health boards and NHS trusts in Wales
- List of newspapers in Wales
- List of shipwrecks off the coast of Wales
- Draft:List of water reservoirs in Wales
- Llais Ceredigion
- Llanddewi
- Llandegla Moor
- Llandre railway station
- Llangammarch Wells Quarry
- Llangower
- Llanllwchaearn, Powys
- Llanwrtyd Wells Urban District
- Llewellyn David Bevan
- Llofft-y-bardd
- Llwyn-Cus
- Llyn
- Llyn Creiniog
- Llyn y Fawnog
- Llyr Llediaith
- Loop Halt railway station
- Machynlleth Carriage Sidings
- Maidenwells
- Mannacus
- Matthew Broomfield
- Maurice Jones (principal)
- Meini Duon
- Mistar Urdd
- Morys Wynn ap John
- Murage
- Mwyngloddfa Brynyrafr
- Mwyngloddfa Cwmbrwyno
- Mwyngloddfa Llechweddhelyg
- Mwyngloddfa Llety Ifan Hen (Vaughan Mine)
- Mwyngloddfa Nant-y-cagl (Eaglebrook Mine)
- Mynydd Hiraethog
- Nant-y-moch
- Nant Cledlyn Pingos
- Nant Clydach Pastures
- Nant y Rhos
- Nantgarw Chinaworks Museum
- National Land & Property Gazetteer
- Nebo, Llaneilian
- Nelson Bog
- Neuadd and Tylelo Mires
- New Newport Stadium
- Newcastle Emlyn Urban District
- Newport Central Library
- Newtown Town Council
- Oaklands, Carmarthenshire
- Ogof Ffynnon Ddu-Pant Mawr
- Old Cilgwyn and Cae Heslop
- Parc-y-rhos
- Parc Bodlondeb and Gwenallt-parc, Lixwm
- Parc Pont-faen
- Parcgweydd
- Parrog
- Paternus
- Pauper apprentice
- Pedair-Ffordd Halt railway station
- Pen-y-graig, Carmarthenshire
- Pen-yr-hen-Allt
- Pencarreg-gopa a Moel Hyrddod
- Penglais Nature Park
- Penllwyn-yr-Hendy
- Penrice, Swansea
- Pentregwyn
- Penygraig (Llanelli)
- Peredur ap Gwynedd
- Plaid Cymru, Green Party, Common Ground
- Plas-y-Gors
- Plas Iolyn Bog
- Pontrhydybont
- Pontypridd Urban District Council election, 1896
- Port Talbot bus station
- Porthkerry Park
- Priory Church in Wales School
- Proposed NHS Redress (Wales) Measure 2008
- Public Disturbance (band)
- Pwll-y-wrach
- Queen Alexandra Dock
- Rheidol Shingles and Backwaters
- Rhos-Rydd
- Rhos Blaenclettwr
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- Rhos Bryn-wichell
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- Rhos Cross Inn
- Rhos Cwmsaeson
- Rhos Esgairwen-fawr a Rhosgoch-fawr
- Rhos Gargoed
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- Rhos Pil-bach a Pennar-fawr
- Rhos Talglas a Chors yr Hafod
- Rhosydd Llanwrthwl
- Rhydwyn, Cylch-y-Garn
- Robert Evans (Dean of Bangor)
- Royal George Hotel, Monmouth
- Rugby League Conference Welsh Championship
- Saint Hywel
- Saint Tyfaelog
- Saint Wenna (queen)
- Seion, Cwmaman
- Sgrech (album)
- Siambr Trawsfynydd
- Silvanus Bevan (1661–1725)
- Sion Jobbins
- Sir Thomas Picton School
- Soar, Hirwaun
- Sophie Moulds
- South Wales Hornets
- Sport in Anglesey
- St Dwynwen's Church
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- Stack Square
- Stackpole
- Standing Advisory Council for Religious Education
- Summerhill, Swansea
- Talgarth (Powys) railway station
- Taliesin Junior School
- The Dylan Thomas Theatre
- The Magic of Life Butterfly House
- Traeth Coch
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- Trapp, Carmarthenshire
- Trowbridge Primary School
- Trwynmynachdy
- Tyddyn-y-barcut
- Tyncoed Pasture
- Upper Chapel Pastures
- Uwchmynydd
- Waen Rydd
- Wales Community Rehabilitation Company
- Wales Tourist Board
- Wales UFO sightings
- Waun Ton-y-spyddaden
- Welcome to Wales
- Welsh Ambulance Services NHS Trust
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- Will Quack Quack
- William Beale (priest)
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- William Richard Arnold
- Women2WinWales
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- Y-Fenni
- Y Glyn-diffwys
- Y Gors
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- Ynyslas railway station
- Ysgol Goronwy Owen
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- Yspyty-Cynfyn
- 1936-37 Newport County A.F.C. season
- 1989–90 Newport A.F.C. season
- Category:19th century Welsh people
- 2010 Welsh League Cup Final
- 2019 Brecon and Radnorshire recall petition
- Draft:2021–22 Cymru North
- Category:20th century Welsh people
- A4081 road
- A472 road
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- A Royal Home in Wales: Llwynywermod
- Aber Fault
- Aber Richard Fault
- Aberdare College
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- Aberdaron Fault
- Abergavenny Monmouth Road railway station
- Abergwesyn Fault
- Abergylid
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- Abertawe
- Abertridwr Fault
- Abertyleri
- Aberystwyth University Students' Union
- Acorn Fault
- Acton Park, Wrexham
- Adelina Patti Theatre
- Afon Arddu
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- Afon Ddu Gorge
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- Afon Saint Fault
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- Afon y Glyn
- Alice the White
- Alison Joy Prosser
- Allt y Crib Fault
- Allt y Grug Fault
- Alltwen, Conwy
- Alyn Valley Fault
- Amy Thomas (singer)
- Anafon Fault
- Category:Ancient Britons
- Anna Eliza Williams
- Anna Haycraft
- Anne Adalisa Beynon Puddicombe
- Anne Adalisa Evans
- Arthog – Caerdeon Fault
- Association of Law Costs Draftsmen
- Attack! Attack
- Axton Fault
- B. M. Gill
- Bachaethlon
- Baglan Energy Park
- Bala (Llyn Tegid) railway station
- Bala railway station
- Banc-y-Darren
- Banknotes of the Chief Treasury of Wales Limited
- Beach Break Live
- Beaches of Wales
- Beaufort Ironworks
- Beech Hill Fault
- Bellstone quarry
- Berach Fault
- Beth Reeks
- Bethan Evans
- Bethel Fault
- Bettws Fault
- Bettws Garmon railway station
- Blaenavon Coal and Iron Company
- Blaenavon Fault
- Blaenavon High Level
- Blaenhirwaun Thrust
- Bodafon Thrust
- Bodelwyddan Fault
- Bong On - Live Long!
- Box Fault
- Brecknock Scout Area (The Scout Association)
- Brecon (Watton) railway station
- Brecon Mount Street railway station
- Bristly Ridge
- Britannia Bridge fire
- British Academy Cymru Awards
- British isles
- Briton Ferry Woods
- Brothers Fault
- Brwynd Overthrust
- Bryn-mawr, Conwy
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- Brynglas House
- Bryngwili Fault
- Bryngwyn Fault
- Brynsiencyn
- Category:Brythonic tribes
- Bwlchgwyn Fault
- Bylchau Fault
- Cacen gri
- Cae Parc Fault
- Caer Llan Wood
- Caerdeon Bodlyn Fault
- Caergwrle Fault
- Caerleon Fault
- Caerleon University
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- Calvinistic Methodists
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- Cardigan - Fishguard Fault Belt
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- Carmel Fault (Carmarthenshire)
- Carmel Fault (Powys)
- Carnarvon Morfa railway station
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- Carnglas
- Carreg y Diocyn
- Carrog Valley Fault
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- Castell, Denbighshire
- Castell Fault
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- Cefn Crib Fault
- Cefn Fault
- Cefn Garw Fault
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- Ceidio Fault
- Cerrig y Gwyddyl
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- Chapel Fault
- Chepstow Fault
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- Church of St David at Llanthony Priory
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- Church of St Theodore, Port Talbot
- Cilfeigan Fault
- Cilgerran Castle quarries
- Cilgerran quarries
- Cilgerran quarry
- Civil parishes in Wales
- Cluniac Houses in Wales
- Clwyd Fault
- Clwyd Scout Area (The Scout Association)
- Clydach Bridge Fault
- Clydach Ironworks
- Clywedog Fault
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- Coed-y-paen Fault
- Coed Hir Fault
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- Template:Communities of Swansea
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- Cosmeston
- Council for Licensed Conveyancers
- County court in England and Wales
- Craig-y-beri Fault
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- Craignant Fault
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- Crick Fault
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- Cross Ash Fault
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- Draft:Crown Office
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- Cwm Eigiau quarry
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- Côr Meibion Pontarddulais
- D Shed
- Dandderwen quarry
- David Davies (author)
- David Nott Foundation
- Draft:Death of Carson Price
- Derwen Fawr
- Dinas Mawddwy railway station
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- Dolbadau quarry
- Dolwyn
- Domesday Survey
- Dorothy Squire
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- Dryw
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- Ebbw Fach Valley
- Ebbw Vale Steel Iron and Coal Company
- Ebbw Valley
- Edward Bowen (footballer born 1858)
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- Elegug Stacks
- Elena Puw Davies
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- Emergency medical services in Wales
- Emily Jane Davis
- Portal:English law
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- Football hooliganism in Wales
- Formula One drivers from Wales
- Further Education college
- Gaewern quarry
- Garn Prys
- Garnedd Fawr
- Geography and identity in Wales
- Draft:George Nevett
- Gigfran quarry
- Gilfach quarry
- Glamorgan West Scout Area (The Scout Association)
- Glastraeth
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- Template:Governing bodies of sports in Wales
- Template:Governments of the National Assembly for Wales sidebar
- Graig Ddu
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- Gwendraeth valley
- Gwent Scout Area (The Scout Association)
- Gwlad Gwlad
- Gwyneth Vaughan
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- HEFCW
- Hendre Ddu quarry
- Hester Lynch Salusbury
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- Hester Piozzi
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- Heyope
- Template:History of Christianity in Wales
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- Holdgate Fee
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- Ida Yehudit Anastasia Grossman
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- International College Wales Swansea
- Iolo Manuscripts
- James Humphry Morris
- Jersey Marine tower
- John Davies (Independent minister)
- John Hughes (footballer born 1877)
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- Judith Allison Lobbett
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- Leadership approval opinion polling for the 2021 Senedd election
- Liberty Stadium (Swansea)
- Lincolnshire Farmers' Union
- List of King George V Playing Fields in Pembrokeshire
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- List of Wales international footballers (alphabetical)
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- Llanbobl
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- Llanover Manuscripts
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- Draft:Llanthomas Castle Mound
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- Locations in Australia with a Welsh name
- Lord's Garden, Ruthin
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- Lôn Las Cymru
- M4T
- M4 Toll
- M4 relief road (Newport)
- Machynys Peninsula Golf Club
- Maen Huail Historic Stone
- Maesycwmmer F.C.
- Mallwyd railway station
- Manchester & Milford Railway
- March of Wales
- Marchia Walliae
- Margaret Blake
- Margaret Thomas-Neale
- Marged Dafydd
- Maria Woodley
- Mark Parry (musician)
- Mary Catherine Rhys
- Maurice Evans (footballer born 1859)
- Melville Barnett
- Merseyside and North Wales Electricity Board
- Metal mining in Wales
- Mid Glamorgan Scout Area (The Scout Association)
- Middleton Hall, Carmarthenshire
- Moel Cae'r-defaid
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- Montgomeryshire Scout Area (The Scout Association)
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- Morgan Tud
- Mr Nice (movie)
- Museum of Welsh Life
- Mynydd Bryn-llech
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- NFU Cymru
- Nant Cwm Philip Stream
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- National flag of Wales
- Neath F.C. (formerly BP Llandarcy F.C.)
- New M4
- Newborough Beach
- Template:Newport
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- Newton Court Stable Block
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- Norah Patricia Morris
- North-East Wales
- North-east Wales
- Norton, Swansea
- Ogw
- Orddu
- Pant-y-Sais Fen
- Pant-y-sais fen
- Pembrokeshire Scout Area (The Scout Association)
- Pen-y-fai
- Pen Pumlumon Fawr
- Pen y Bwlch Gwyn
- Penmaen, Swansea
- Penmaenbach
- Penycaerau
- Percy Baker (gymnast)
- Pitt's Head Halt railway station
- Plain quarry
- Pluck Ness Monster
- Pont Caerhywel
- Pontyberry
- Pontypandy
- Pontypool Leisure Centre
- Port Talbot Peripheral Distributor Road
- Porth y Wygyr
- Porthor
- Portmadoc (WHR) railway station
- Portmadoc New (1923) station
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- Poundffald
- Prince of Wales (locomotive)
- Princely standard of Wales
- Priory Church of St Seiriol
- Pwdwr quarry
- Pîl
- Quarry Bach
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- Quarry Forever
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- Quay House, Conwy
- RAF Blaenanerch
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- Radnor Scout Area (The Scout Association)
- Ravenhill, Swansea
- Recreation Ground, Caersws
- Regimental Band of the Royal Welsh
- Rhaeadr Cynfal
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- Rhona Olive Harris
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- Rhydlios
- Richard Payne Davies
- River Fathew
- River Wyvern
- Draft:Robert Williams (poet)
- Template:Roman Catholic Archbishops and Bishops in England and Wales
- Rosebush quarry
- Runston
- Saint Cían
- Senedd Cymru – Welsh Parliament
- Sentencing Guidelines Council
- Severn Tunnel Junction Marshalling Yard
- She's Here Now
- Shirenewton Primary
- Sid Thomas
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- Sir Ralph Darling
- Sirhowy Ironworks
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- Slade, Swansea
- Snowdonia and Anglesey Scout Area (The Scout Association)
- South Dulas
- South Pembrokeshire District Council
- South Wales Daily News
- South Wales Ironmen
- Template:Sports venues in Cardiff
- St. Andrews Major
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- St David's and the Cathedral Close
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- St Tudwal's Island East
- Susannah Jane Ellis
- Swansea West Business Park
- Template:Swansea topics
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- The Barracks, Caernarfon
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- The Brecon Mountain Railway
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- The March of Wales
- The Prince Of Wales
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- The Welsh Wizard
- Thistleboon
- Thomas Bevan (cricketer, born 1999)
- Tirdeunaw
- Tondu Ironworks
- Tonfanau quarry
- Torta Galesa
- Traeth Bach, Anglesey
- Traeth Lligwy
- Traeth yr Ora
- Template:Transport in Swansea
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- Tregib Arms
- Treorchy Cemetery
- Tribunals in England and Wales
- Ty Hyll
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- University of Wales, Aberystwyth
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- Template:Use Welsh English
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- Template:WHR Line diagram
- Template:WP Wales
- WalesOnline
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- Wales national football team results – 2000s
- Wales on Sunday
- Template:WelshBiographyOnline
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- Template:Welsh English
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- Template:Welsh MSs 2021-2026
- Welsh March
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- Template:Welsh dogs
- Welsh given name
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- Category:Welsh priests
- Welshcake
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- Whitland Abbey Slate quarry
- William Herbert, 1st Earl of Pembroke (8th Creation)
- Winnie Parry
- Women in Wales
- World Bog Snorkelling Championship
- Worthenbury
- Draft:Wrexham, Shropshire & Midlands Railway
- Wrottin Powys
- Wynne quarry
- Template:YYY0s in Welsh sport category header
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- Template:Year in Wales
- Yerbeston
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- Yr Wyddfa
- Ystalyfera Ironworks
- Ystrad (fictional)
- Eluned Morgan government
- First Frontbench Team of Mike German
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- Second Frontbench Team of Mike German
- Wales at the 1986 Commonwealth Games
- Bobby Freeman (writer)
- Brigyn
- Bus transport in Wales
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- Caim
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- Carmarthen (1542–1918 UK Parliament constituency)
- Charles Street, Wrexham
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- Climbing Trees
- College Street, Wrexham
- Cwmdonkin Park
- Demented Are Go
- Deputy Minister for Arts, Sport and Tourism
- Dylan ail Don
- Dynion Mwyn
- Fairy Road, Wrexham
- Feathers Hotel, Wrexham
- First Shadow Cabinet of Andrew RT Davies
- Grosvenor Road, Wrexham
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- History of education in Wales (1701–1870)
- History of education in Wales before 1701
- Horse and Jockey, Wrexham
- Jac Yarrow
- List of Green Party of England and Wales MPs
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- Llandudno Pier Pavilion Theatre
- Mab Darogan
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- Medr (Wales)
- Mo-Ho-Bish-O-Pi
- Morriston Orpheus Choir
- Nags Head, Wrexham
- Opinion polling for the 1999 National Assembly for Wales election
- Panic Room (band)
- Pil (placename)
- Principal areas of Wales
- Queen's Square, Wrexham
- Saith Seren
- Samuel Baldwyn Rogers
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- Shootin' Goon
- Soames Brewery Chimney
- Stepney family
- Subdivisions of Wales
- Temple Row, Wrexham
- The Broken Vinyl Club
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- Thomas Morris (author)
- Trefnydd of the Senedd
- Trwbador
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- Waun-Lwyd
- Welsh Government roads review
- Welsh National Bowls Championships
- Wrexham and East Denbighshire War Memorial Hospital
- Yr Anhrefn