McKiernan is a surname. Notable people with the surname include:
- Andrew J. McKiernan (born 1970, Sydney, Australia), Australian speculative fiction writer and Illustrator
- Brian Mág Tighearnán (anglicised Brian McKiernan) was chief of the McKiernan Clan of Tullyhunco, County Cavan from 1358 until 1362
- Catherina McKiernan (born 1969), Irish long-distance runner
- Conchobar ‘Buidhe’ Mág Tighearnán (anglicised Conor ‘The Tawny’ McKiernan) was chief of the McKiernan Clan of Tullyhunco, County Cavan from 1312 until 1314
- Cú Connacht Mág Tighearnán (anglicised Constantine McKiernan) was chief of the McKiernan Clan of Tullyhunco, County Cavan from 1383 until his death in 1412
- David D. McKiernan (born 1950), United States Army four-star general and Commander ISAF and USFOR-A
- Dennis McKiernan (born 1932), American fantasy writer best known for The Iron Tower
- Domhnall ’An Saithnech’ Mág Tighearnán (anglicised Donal McKiernan of Saitne) was chief of the McKiernan Clan of Tullyhunco, County Cavan from 1311 until 1312
- Douglas Mackiernan the first officer of the Central Intelligence Agency (CIA) to be killed in the line of duty.
- Duarcán Mág Tighearnán, the Second (anglicised Durcan McKiernan) was chief of the McKiernan Clan of Tullyhunco, County Cavan from 1279 until his death in 1290
- Eoin McKiernan (1915–2004), early Irish Studies scholar and founder of Irish American Cultural Institute
- Fergal Mág Tighearnán the First, (anglicised Fergal McKiernan) was chief of the McKiernan Clan of Tullyhunco, County Cavan from 1362 until his death in 1383
- Fergal Mág Tighearnán, the Second, (anglicised Fergal McKiernan) was chief of the McKiernan Clan of Tullyhunco, County Cavan from 1512 until his death in 1523
- Fergal Mág Tighearnán, the Third, (anglicised Fergal McKiernan) was chief of the McKiernan Clan of Tullyhunco, County Cavan until his death in 1588
- Gíolla Íosa Mór Mág Tighearnán (d. 1279), (anglicised ‘Big’ Gilleese McKiernan), was chief of the McKiernan Clan of Tullyhunco, County Cavan from c.1269 until his death in 1279
- Íomhaor Mág Tighearnán, the Second, (anglicised Ivor McKiernan), was chief of the McKiernan Clan of Tullyhunco, County Cavan from 1258 until his death c.1269.
- Jim McKiernan (1944–2018), Irish-born Australian politician
- John Mág Tighearnán the First, (anglicised John McKiernan) was chief of the McKiernan Clan of Tullyhunco, County Cavan until his death in 1499
- John Mág Tighearnán, the Second, (anglicised John McKiernan) was chief of the McKiernan Clan of Tullyhunco, County Cavan including the period 1641 to 1657
- John S. McKiernan (1911–1997), American Democratic politician and Lieutenant Governor and Governor of Rhode Island
- Kevin McKiernan (born 1944), veteran foreign correspondent and documentary filmmaker
- Macraith Mág Tighearnán (d.1258), (anglicised Magrath McKiernan), was chief of the McKiernan Clan of Tullyhunco, County Cavan from c.1240 until his death in 1258.
- Matha Mág Tighearnán (anglicised Matthew McKiernan) was chief of the McKiernan Clan of Tullyhunco, County Cavan from 1290 until 1311
- Michael McKiernan, rugby league footballer
- Sithric ‘Carrach-in-Cairn’ Mág Tighearnán (anglicised Sitric ‘the Scabbed of Carn’ McKiernan) was chief of the McKiernan Clan of Tullyhunco, County Cavan in the year 1290
- Tadhg Mág Tighearnán (anglicised Teigue McKiernan) was chief of the McKiernan Clan of Tullyhunco, County Cavan until his death in 1474
- Tawnia McKiernan, American television director
- Tomás Mág Tighearnán (anglicised Thomas McKiernan) was chief of the McKiernan Clan of Tullyhunco, County Cavan from 1314 until his death in 1358
- William Mág Tighearnán (anglicised William McKiernan) was chief of the McKiernan Clan of Tullyhunco, County Cavan from 1499 until his death in 1512
See also
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This page lists people with the surname McKiernan.
If an internal link intending to refer to a specific person led you to this page, you may wish to change that link by adding the person's given name(s) to the link.
If an internal link intending to refer to a specific person led you to this page, you may wish to change that link by adding the person's given name(s) to the link.