Thailands Coups1932 Coup: Phraya Songsuradet. Phraya Phaholpholphayuhasena, Phraya Ritthiakhaney and Phra Phrasasphithayayut, the Four Musketeers or the Four Tiger SoldiersJune 24, 1932: The Khana Ratsadon party overthrows the absolute monarchy of King Prajadhipok.June 20, 1933: Phraya Phahon Phonphayuhasena overthrows Phraya Manopakorn Nititada.November 7, 1947: Phin Choonhavan overthrows Thawal Thamrong Navaswadhi.November 29, 1951: Military overthrows 1949 constitution and reverts to 1932 constitution.September 21, 1957: Sarit Thanarat overthrows Plaek PibulsongkramOctober 20, 1958: Self-coup of Sarit ThanaratNovember 18, 1971: Self-coup of Thanom KittikachornOctober 6, 1976: Sangad Chaloryu overthrows Seni PramojOctober 20, 1977: Kriangsak Chomanan overthrows Tanin KraivixienFebruary 24, 1991: Sunthorn Kongsompong overthrows Chatichai ChoonhavanSeptember 19, 2006: Sonthi Boonyaratglin overthrows Thaksin ShinawatraMay 22, 2014: Prayuth Chan-ocha overthrows Niwatthamrong Boonsongpaisan

Source: Wikipedia