This list is work in progress. It is not complete yet.
Central
edit- Kamnoet Nopphakhun (กำเนิดนพคุณ) -> Prachuap Khirikhan [77040100, Tambon in Amphoe Bang Saphan]
- Pranburi (ปราณบุรี) -> Prachuap Khirikhan [77060000]
- Inburi (อินทร์บุรี) -> Singburi [17060000, merged 1895]
- Promburi (พรหมบุรี) -> Singburi [17040000, merged 1895]
- Thonburi -> Bangkok (Phra Nakhon) (1972)
- Thanyaburi (ธัญบุรี) -> Pathum Thani [13030000]
- Minburi (มีนบุรี) -> Bangkok [10100000]
- Phrapradaeng (Nakhon Khuankan) -> Samut Prakan [11040000]
- Manorom (มโนรมย์) -> Chainat [18020000]
- Phayuha Khiri (พยุหะคีรี)-> Nakhon Sawan [60100000]
- Sanburi (Tri Trueng, Sankhaburi สรรคบุรี) -> Chainat [18050000]
- Sing -> Kanchanaburi [71020300]
North
edit- Phichai (พิชัย) -> Uttaradit [53070000]
- Saweankhalok (Si Satchanalai, ศรีสัชนาลัย) -> Sukhothai [64050000]
- Lom Sak (หล่มสัก) -> Phetchabun [67030000]
- Phayao -> Chiang Rai (1897)
Northeast
edit- Khukhan -> Sisaket
- Khemarat -> Ubon Ratchathani
East
edit- Phanom Sarakham -> Chachoengsao
South
edit- Thalang -> Phuket (or actually a relocate?)
- Takua Pa -> Phang Nga [1931?]
- Takuatung -> Phang Nga [1840]
- Chaiya (ไชยา) -> Surat Thani [84060000, merged 1915?]
- Kanchanadit -> Surat Thani (1915? - or was it only renamed, or moved?)
- Langsuan -> Chumpon
- Saiburi -> Pattani
- Yaring -> Pattani
- Nongchik -> Pattani
- Raman -> Yala
- Ra-ngae -> Narathiwat
- Kraburi -> Ranong
- Prathiu -> ??? (somewhere in south)