Parties
Parliamentary
Government
พรรคพลังประชารัฐ (Palang Pracharath Party/People's State Power Party)
พรรคภูมิใจไทย (Bhumjaithai Party/Thai Pride Party)
พรรคประชาธิปัตย์ (Democrat Party)
พรรครวมพลังประชาชาติไทย (Action Coalition for Thailand)
พรรคพลังท้องถิ่นไท (Thai Local Power Party)
พรรคชาติพัฒนา (Chart Pattana Party/National Development Party)
พรรครักษ์ผืนป่าประเทศไทย (Thai Forest Conservation Party)
พรรคพลังธรรมใหม่ (New Palangdharma Party/New Power of Dharma Party)
Opposition
พรรคเพื่อไทย (Pheu Thai Party/For Thais Party)
พรรคก้าวไกล (Move Forward Party)
พรรคเสรีรวมไทย (Thai Liberal Party)
Non-Parliamentary
พรรคประชาราช (Pracharaj Party/Royal People Party)
พรรคความหวังใหม่ (New Aspiration Party)
พรรคเพื่อแผ่นดิน (Puea Pandin Party/For Country Party)
พรรคไทยศรีวิไลย์ (Thai Civilized Party)
พรรคไทยภักดี (Thai Pakdee Party)
Defunct
คณะราษฎร (Khana Ratsadon/People's Party) (1927-1947)
เสรีไทย (Free Thai Movement) (1941-1945)
พรรคคอมมิวนิสต์แห่งประเทศไทย (Communist Party of Thailand) (1942-1990s)
พรรคเสรีมนังคศิลา (Seri Manangkhasila Party) (1955-1957)
พรรคเสรีประชาธิปไตย (Liberal Democratic Party) (1955-1958)- พรรคชาติสังคม (National Socialist Party) (1957-1958)
พรรคสังคมนิยมแห่งประเทศไทย (Socialist Party of Thailand) (1974-1976)
พรรคธรรมสังคม (Social Justice Party) (1974-1976)- พรรคพลังใหม่ (New Force Party) (1974-1988)
- พรรคชาติไทย (Thai Nation Party) (1974-2008)
พรรคกิจสังคม (Social Action Party) (1974-2018)- พรรคพลังธรรม (Palang Dharma Party/Power of Dharma Party) (1988-2007)
พรรคสามัคคีธรรม (Justice Unity Party) (1992)
พรรคชาติพัฒนา (National Development Party) (1992-2005)
พรรคไทยรักไทย (Thai Rak Thai Party/Thais Love Thais Party) (1998-2007)- พรรคพลังประชาชน (People's Power Party) (1998-2008)
- พรรครวมใจไทย (Thais United) (2007)
พรรคมัชฌิมาธิปไตย (Neutral Democratic Party) (2007-2008)
พรรคการเมืองใหม่ (New Politics Party) (2009-2013)- พรรคไทยรักษาชาติ (Thai Raksa Chart Party/Thais Save the Nation Party) (2009-2019)
พรรคอนาคตใหม่ (Future Forward Party) (2018-2020)
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List of Rulers (WIP)
Only the most significant Lords (Pho Khun), Governors (Phaya) and Kings (Phra) are included
List of Rulers of the Sukhothai Kingdom
- Pho Khun Si Inthrathit (Pho Khun Bang Klang Hao)
- Pho Khun Ban Mueang
- Pho Khun Ram Khamhaeng the Great (Pho Khun Ramarat)
- Phaya Loe Thai
- Phaya Ngua Nam Thum
- Phaya Li Thai (Phra Maha Thammaracha I)
Under the suzerainty of the Kingdom of Ayutthaya
- Phaya Lue Thai (Phra Maha Thammaracha II)
- Phaya Saileuthai (Phra Mahathammaracha III)
- Phaya Borommapan (Phra Mahathammaracha IV)
List of Kings of the Ayutthaya Kingdom
Uthong Dynasty
- Somdet Phra Chao Uthong (Somdet Phra Ramathibodi I)
- Somdet Phra Ramesuan
Suphannaphum Dynasty
- Somdet Phra Borommarachathirat I (Khun Luang Pha Ngua)
Sukhothai Dynasty
Prasat Thong dynasty
Ban Phlu Luang dynasty
Emperor of Thonburi Kingdom
- Taksin the Great (Phra Chao Krung Thonburi) (Emperor of Siam) (Sanphet X)
List of Kings of the Rattanakosin Kingdom (present)
Chakri Dynasty
| No. | Title | Name | Reign | Notes |
|---|---|---|---|---|
| 1 | Rama I |  Phrabat Somdet Phra Paramoruracha Maha Chakri Boromanat Phra Phutthayotfa Chulalok the Great
|
1782-1809 | |
| 2 | Rama II |  Phrabat Somdet Phra Boromratchapongchet Mahetsawarasunthon Phra Phutthaloetla Naphalai
|
1809-1824 | |
| 3 | Rama III |  Phrabat Somdet Phra Paramathiworaset Maha Jessadabodindra Phra Nang Klao Chao Yu Hua
|
1824-1851 | |
| 4 | Rama IV |  Phrabat Somdet Phra Paramenthra Ramathibodhi Srisindra Maha Mongkut Phra Chom Klao Chao Yu Hua
|
1824-1851 | Known as the "The Father of Science and Technology" in Siam. |
| 5 | Rama V |  Phrabat Somdet Phra Paraminthra Maha Chulalongkorn Phra Chulachomklao Chao Yu Hua the Great
|
1868-1910 | The  Feudal system changed the regime to  Absolute monarchy, 1892
|
| 6 | Rama VI |  Phrabat Somdet Phra Paramenthra Maha Vajiravudh Phra Mongkut Klao Chao Yu Hua
|
1910-1925 | |
| 7 | Rama VII |  Phrabat Somdet Phra Paraminthra Maha Prajadhipok Phra Pok Klao Chao Yu Hua
|
1925-1935 | The Siamese revolution of 1932 ended Absolute monarchy. Abdicated 1935.
|
| 8 | Rama VIII |  Phrabat Somdet Phra Paramenthra Maha Ananda Mahidol Phra Atthama Ramathibodin
|
1935-1946 | Never coronated. Shot dead, regicide case remained mystery although several theories surfaced. |
| 9 | Rama IX |  Phrabat Somdet Phra Boromchanakathibet Maha Bhumibol Adulyadej Maharaj Borommanatbophit the Great
|
1946-2016 | |
| 10 | Rama X |  Phrabat Somdet Phra Paramenthra Ramathibodhi Srisindra Maha Vajiralongkorn Phra Vajira Klao Chao Yu Hua
|
2016-present |
List of Prime Ministers since 1932[Note 1]
Phraya Manopakorn Nititada (1932-33, Independent)-
Phraya Phahonphonphayuhasena (1933-38, Khana Ratsadon (Military)) 
Field Marshal Plaek Pibulsongkram (1938-44, Khana Ratsadon; 1948-1957, Conservative Party; 1957, Seri Manangkhasila)- Major Khuang Aphaiwong (1944-45 &1946, Independent; 1947-48, Democrat Party)
- Thawi Bunyaket (1945, Free Thai)
- Mom Rajawongse Seni Pramoj (1945-46, Free Thai; 1975 and 1976, Democrat Party)
Pridi Panomyong (1946, Free Thai)- Rear Admiral Thawan Thamrongnawasawat (1946-47, Constitutional Front)
Pote Sarasin (1957-58, Independent)- Field Marshal Thanom Kittikajorn (1958, National Socialist; 1963-1973, Military/United Thai People's Party)
Sarit Thanarat (1958-1963, Military)
Prof. Sanya Dharmasakti (1973-75, Independent)- Mom Rajawongse Kukrit Pramoj (1975-76, Social Action Party)
Thanin Kraivichien (1976-77, Independent)- General Kriangsak Chamanan (1977-80, Independent/Military)
General Prem Tinsulanonda (1980-88, Independent/Military)[Note 2]
Chatchai Choonhavan (1988-91, Chart Thai Party)
Anand Panyarachun (1991-92, Independent)- General Suchinda Kraprayoon (1992, Independent)
Chuan Leekpai (1992-95 & 1997-2001, Democrat Party)
Banharn Silpa-archa (1995-96, Chart Thai Party)- General Chavalit Yongchaiyudh (1996-97, New Aspiration Party)
Thaksin Shinawatra (2001-06, Thai Rak Thai Party)- General Surayud Chulanont (2006-08, Independent)
- Samak Sundaravej (2008, People's Power Party)
- Somchai Wongsawat (2008, People's Power Party)
Abhisit Vejjajiva (2008-11, Democrat Party)
Yingluck Shinawatra (2011-14, Pheu Thai Party)
General Prayut Chan-o-cha (2014-19, Military; 2019-2023, Palang Pracharath Party; 2023-present[Note 3], 
United Thai Nation Party)
Notes
- ↑ The political parties of the Prime Ministers are based on the affiliated political parties during their respective tenure(s)
- ↑ As President of the Privy Council, Prem was later appointed as Regent of Thailand following the death of
King Rama IX in 2016
- ↑ Duties suspended from August to September 2022 by constitutional court order in accordance to the 2017 Constitution whether he exceeded term limit of 8 years