# List of prime ministers of Thailand by time in office

This is a list of prime ministers of Thailand by time in office. The basis of the list is the inclusive number of days from being sworn in until leaving office.

## Rank by time in office

Updated daily according to UTC.
| Rank | No. | Prime Minister | Party | Assumed office | Left office | Time in office (term) | Time in office (total) |
| 1. | 3rd | Plaek Phibunsongkhram (1897–1964) | Khana Ratsadon (Military faction) | 16 December 1938 | 1 August 1944 | 5 years, 229 days | 15 years, 25 days |
| 1. | 3rd | Plaek Phibunsongkhram (1897–1964) | Conservative Party | 8 April 1948 | 16 September 1957 | 9 years, 161 days | 15 years, 25 days |
| 1. | 3rd | Plaek Phibunsongkhram (1897–1964) | Seri Manangkhasila | 8 April 1948 | 16 September 1957 | 9 years, 161 days | 15 years, 25 days |
| 2. | 10th | Thanom Kittikachorn (1911–2004) | National Socialist | 1 January 1958 | 20 October 1958 | 292 days | 10 years, 236 days |
| 2. | 10th | Thanom Kittikachorn (1911–2004) | Military | 9 December 1963 | 14 October 1973 | 9 years, 309 days | 10 years, 236 days |
| 2. | 10th | Thanom Kittikachorn (1911–2004) | United Thai People | 9 December 1963 | 14 October 1973 | 9 years, 309 days | 10 years, 236 days |
| 2. | 10th | Thanom Kittikachorn (1911–2004) | Military | 9 December 1963 | 14 October 1973 | 9 years, 309 days | 10 years, 236 days |
| 3. | 29th | Prayut Chan-o-cha (born 1954) | Military | 22 May 2014 | 22 August 2023 | 9 years, 92 days | 9 years, 92 days |
| 3. | 29th | Prayut Chan-o-cha (born 1954) | Palang Pracharath | 22 May 2014 | 22 August 2023 | 9 years, 92 days | 9 years, 92 days |
| 4. | 16th | Prem Tinsulanonda (1920–2019) | Military | 3 March 1980 | 4 August 1988 | 8 years, 154 days | 8 years, 154 days |
| 5. | 20th | Chuan Leekpai (born 1938) | Democrat | 23 September 1992 | 13 July 1995 | 2 years, 293 days | 6 years, 20 days |
| 5. | 20th | Chuan Leekpai (born 1938) | Democrat | 9 November 1997 | 9 February 2001 | 3 years, 92 days | 6 years, 20 days |
| 6. | 23rd | Thaksin Shinawatra (born 1949) | Thai Rak Thai | 9 February 2001 | 19 September 2006 | 5 years, 222 days | 5 years, 222 days |
| 7. | 2nd | Phraya Phahonphonphayuhasena (1887–1947) | Khana Ratsadon (Military faction) | 21 June 1933 | 16 December 1938 | 5 years, 178 days | 5 years, 178 days |
| 8. | 11th | Sarit Thanarat (1908–1963) | Military | 20 October 1958 | 8 December 1963 | 5 years, 49 days | 5 years, 49 days |
| 9. | 28th | Yingluck Shinawatra (born 1967) | Pheu Thai | 5 August 2011 | 7 May 2014 | 2 years, 275 days | 2 years, 275 days |
| 10. | 27th | Abhisit Vejjajiva (born 1964) | Democrat | 17 December 2008 | 5 August 2011 | 2 years, 231 days | 2 years, 231 days |
| 11. | 17th | Chatichai Choonhavan (1920–1998) | Chart Thai | 4 August 1988 | 23 February 1991 | 2 years, 203 days | 2 years, 203 days |
| 12. | 15th | Kriangsak Chamanan (1917–2003) | Military | 11 November 1977 | 3 March 1980 | 2 years, 113 days | 2 years, 113 days |
| 12. | 15th | Kriangsak Chamanan (1917–2003) | National Democrat | 11 November 1977 | 3 March 1980 | 2 years, 113 days | 2 years, 113 days |
| 13. | 4th | Khuang Aphaiwong (1902–1968) | Independent | 1 August 1944 | 31 August 1945 | 1 year, 30 days | 1 year, 232 days |
| 13. | 4th | Khuang Aphaiwong (1902–1968) | Independent | 31 January 1946 | 24 March 1946 | 52 days | 1 year, 232 days |
| 13. | 4th | Khuang Aphaiwong (1902–1968) | Democrat | 10 November 1947 | 8 April 1948 | 150 days | 1 year, 232 days |
| 14. | 18th | Anand Panyarachun (born 1932) | Independent | 2 March 1991 | 7 April 1992 | 1 year, 36 days | 1 year, 141 days |
| 14. | 18th | Anand Panyarachun (born 1932) | Independent | 10 June 1992 | 23 September 1992 | 105 days | 1 year, 141 days |
| 15. | 21st | Banharn Silpa-archa (1932–2016) | Chart Thai | 13 July 1995 | 25 November 1996 | 1 year, 135 days | 1 year, 135 days |
| 16. | 12th | Sanya Dharmasakti (1907–2002) | Independent | 14 October 1973 | 15 February 1975 | 1 year, 124 days | 1 year, 124 days |
| 17. | 24th | Surayud Chulanont (born 1943) | Independent | 1 October 2006 | 29 January 2008 | 1 year, 120 days | 1 year, 120 days |
| 18. | 8th | Thawan Thamrongnawasawat (1901–1988) | Constitutional Front | 23 August 1946 | 8 November 1947 | 1 year, 77 days | 1 year, 77 days |
| 19. | 13th | Kukrit Pramoj (1911–1995) | Social Action | 14 March 1975 | 20 April 1976 | 1 year, 37 days | 1 year, 37 days |
| 20. | 14th | Thanin Kraivichien (1927–2025) | Independent | 8 October 1976 | 20 October 1977 | 1 year, 12 days | 1 year, 12 days |
| 21. | 30th | Srettha Thavisin (born 1962) | Pheu Thai | 22 August 2023 | 14 August 2024 | 358 days | 358 days |
| 22. | 1st | Phraya Manopakorn Nititada (1884–1948) | Independent | 28 June 1932 | 20 June 1933 | 357 days | 357 days |
| 23. | 22nd | Chavalit Yongchaiyudh (born 1932) | New Aspiration | 25 November 1996 | 9 November 1997 | 349 days | 349 days |
| 24. | 6th | Seni Pramoj (1905–1997) | Free Thai | 17 September 1945 | 31 January 1946 | 136 days | 332 days |
| 24. | 6th | Seni Pramoj (1905–1997) | Democrat | 15 February 1975 | 14 March 1975 | 27 days | 332 days |
| 24. | 6th | Seni Pramoj (1905–1997) | Democrat | 20 April 1976 | 6 October 1976 | 169 days | 332 days |
| 25. | 25th | Samak Sundaravej (1935–2009) | People's Power | 29 January 2008 | 8 September 2008 | 223 days | 223 days |
| 26. | 31st | Paetongtarn Shinawatra แพทองธาร ชินวัตร (born 1986) | Pheu Thai | 16 August 2024 | Incumbent | 192 days | 192 days |
| 27. | 7th | Pridi Banomyong (1900–1983) | Free Thai | 24 March 1946 | 23 August 1946 | 152 days | 152 days |
| 28. | 9th | Pote Sarasin (1905–2000) | Independent | 21 September 1957 | 1 January 1958 | 102 days | 102 days |
| 29. | 26th | Somchai Wongsawat (born 1947) | People's Power | 8 September 2008 | 2 December 2008 | 85 days | 85 days |
| 30. | 19th | Suchinda Kraprayoon (born 1933) | Independent | 7 April 1992 | 24 May 1992 | 47 days | 47 days |
| 31. | 5th | Thawi Bunyaket (1904–1971) | Free Thai | 31 August 1945 | 17 September 1945 | 17 days | 17 days |