Thailand Heads of State
Vajiralongkorn, King
- Full Name: Vajiralongkorn
- Coronation: 4 May 2019
- Reign: 13 October 2016 – Present
- Predecessor: Bhumibol Adulyadej
- Successor: NA
- Born: 28 July 1952
- Birth Place: Amphorn Sathan Residential Hall, Dusit Palace, Bangkok, Thailand
- Died: NA
- Alma Mater: Royal Military College, Duntroon in Canberra; Australian Army; University of New South Wales; Sukhothai Thammathirat Open University
- Spouse(s): Soamsawali Kitiyakara (m. 1977, div. 1991);
Yuvadhida Polpraserth (m. 1994, div. 1996);
Srirasmi Suwadee (m. 2001, div. 2014);
Suthida Tidjai (m. 2019);
Niramon Ounprom (m. 2019, sep. 2019) - Children: Bajrakitiyabha; Juthavachara Vivacharawongse; Vacharaesorn Vivacharawongse; Chakriwat Vivacharawongse; Vatchrawee Vivacharawongse; Sirivannavari; Dipangkorn Rasmijoti
Bhumibol Adulyadej, King
- Full Name: Bhumibol Adulyadej
- Coronation: 5 May 1950
- Reign: 9 June 1946 – 13 October 2016
- Predecessor: Ananda Mahidol
- Successor: Vajiralongkorn
- Born: 5 December 1927
- Birth Place: Mount Auburn Hospital, Cambridge, Massachusetts, United States
- Died: 13 October 2016
- Death Place: Siriraj Hospital, Bangkok, Thailand
- Internment: (Interment of ashes) Wat Bowonniwet Vihara, Phra Nakhon, Bangkok, Thailand
- Alma Mater: University of Lausanne
- Spouse(s): Sirikit Kitiyakara (m. 1950)
- Children: Ubolratana; Maha Vajiralongkorn (Rama X)
Ananda Mahidol, King of Siam
- Full Name: Ananda Mahidol
- Reign: 2 March 1935 – 9 June 1946
- Predecessor: Prajadhipok
- Successor: Bhumibol Adulyadej
- Born: 20 September 1925
- Birth Place: Heidelberg, Baden, Weimar Republic
- Died: 9 June 1946
- Death Place: Grand Palace, Bangkok, Thailand
- Internment: Royal Crematorium, Sanam Luang, Bangkok, Thailand
Prajadhipok, King of Siam
- Full Name: Prajadhipok
- Coronation: 25 February 1926
- Reign: 25 November 1925 – 2 March 1935
- Predecessor: Vajiravudh
- Successor: Ananda Mahidol
- Born: 8 November 1893
- Birth Place: Grand Palace, Bangkok, Siam
- Died: 30 May 1941
- Death Place: Surrey, England
- Internment: Golders Green Crematorium, London, England
- Alma Mater: Eton College; Woolwich Military Academy
- Spouse(s): Rambai Barni
Vajiravudh, King of Siam
- Full Name: Vajiravudh
- Coronation: 11 November 1910
- Reign: 23 October 1910 – 26 November 1925
- Predecessor: Chulalongkorn
- Successor: Prajadhipok
- Born: 1 January 1881
- Birth Place: Grand Palace, Bangkok, Siam
- Died: 26 November 1925
- Death Place: Grand Palace, Bangkok, Siam
- Alma Mater: Royal Military College, Sandhurst; Christ Church Oxford
- Spouse(s): Sucharit Suda; Lakshamilavan; Indrasakdi Sachi; Suvadhana
Chulalongkorn, King of Siam
- Full Name: Chulalongkorn
- Coronation: 11 November 1868
- Reign: 1 October 1868 – 23 October 1910
- Predecessor: Mongkut
- Successor: Vajiravudh
- Born: 20 September 1853
- Birth Place: Grand Palace, Bangkok, Siam
- Died: 23 October 1910
- Death Place: Amphorn Sathan Residential Hall Dusit Palace, Bangkok, Siam
- Spouse(s): 116 including Khae Phuengbun; Phae Bunnag; Saeng Kalyanamitra; Sut Sukumalachandra; Princess Daksinajar; Talap Ketudat; Morakot Benyakul; Princess Piu Ladavalya; Yoi Isarankura; Princess Bua Ladavalya; Uam Bisalayabutra; Chaem Kalyanamitra; Choem; Thapthim Rochanatisha; Princess Sukhumala Marasri; Princess Savang Vadhana; Princess Sunandha Kumariratana; Princess Saovabha Phongsri; Bua; Thapthim Rochanatisha; Mot Bunnag; Chan Sukumalachandra; Sai Sukumalachandra; Ruean Sundarasaradula; Wat; Princess Sai Ladavalya; Thipkeson na Chiangmai; Nueang Snidvongs; On Bunnag; Phrom; Wong Netrayana; Sae Rojanadis; Keson Snidvongs; Chum Krairoek; Princess Dara Rasmi of Chiangmai; Iam Bunnag; Hem Amatyakul; Luean Niyavananda; Chiu Kapitatha
- Children: 77 including Phongpraphai; Srivilailaksana; Isarawongse Vorarajkumar; Voralaksanavadi; Ajrabarni Rajkanya; Chudharatana Rajakumari; Chandra Saradavara; Orabindu Benyabhak; Suvabaktra Vilayabanna; Yaovamalaya Narumala, Princess of Sawankhalok; Kitiyakara Voralaksana, Prince of Chanthaburi; Prince Nabhanka Nibandhabongs; Raphi Phatthanasak, Prince of Ratchaburi; Pravitra Vadhanodom, Prince of Prachinburi; Princess Bandhavanna Varobhas; Chirapravati Voradej, Prince of Nakhon Chaisi; Princess Bhadrayuvadi; Suddha Dibyaratana, Princess of Rattanakosin; Maha Vajirunhis, Crown Prince of Siam; Princess Kannabhorn Bejaratana; Bahurada Manimaya, Princess Debnariratana; Princess Charoensri Chanamayu; Prince Isariyalongkorn; Princess Praves Vorasamai; Abhakara Kiartivongse, Prince of Chumphon; Vajiravudh, King of Siam Great Crown of Victory (heraldry); Princess Vichitra Chiraprabha; Princess Sasibongse Prabai; Paribatra Sukhumbandhu, Prince of Nakhon Sawan; Princess Bismai Bimalasataya; Purachatra Jayakara, Prince of Kamphaeng Phet; Prince Tribejrutama Dhamrong; Sommatiwongse Varodaya, Prince of Nakhon Si Thammarat; Benbadhanabongse, Prince of Phichai; Princess Oraongka Ankayuba; Chakrabongse Bhuvanath, Prince of Phitsanulok; Yugala Dighambara, Prince of Lopburi; Vudhijaya Chalermlabha, Prince of Singburi; Valaya Alongkorn; Dilok Nobaratana, Prince of Sankha Buri; Princess Nabhachara Chamrassri; Suriyong Prayurabandhu, Prince of Chaiya; Yaovabha Bongsanid; Oraprabandh Rambai; Malini Nobhadara; Prabha Bannabilaya; Prabai Bannabilas; Rangsit Prayurasakdi, Prince of Chainat; Siriraj Kakudhabhand; Nibha Nobhadol; Komala Saovamala; Princess Sirabhorn Sobhon; Khajera Chirapradidha; Samaya Vudhirodom; Prince Isariyabhorn; Adorndibyanibha; Asdang Dejavudh, Prince of Nakhon Ratchasima; Vimolnaka Nabisi; Abbhantripaja;Adisaya Suriyabha; Princess Dibyalangkarn; Suchitra Bharani; Vapi Busbakara; Mahidol Adulyadej, Prince of Songkhla; Anusara Siriprasadh; Princess Lavad Voraong; Chudadhuj Dharadilok; Hemvadi; Prince Urubongs Rajsombhoj; Prajadhipok
Mongkut, King of Siam
- Full Name: Mongkut
- Coronation: 15 May 1851
- Reign: 2 April 1851 – 1 October 1868
- Predecessor: Nangklao
- Successor: Chulalongkorn
- Born: 18 October 1804
- Birth Place: Thonburi Palace, Bangkok Yai, Bangkok, Siam
- Died: 1 October 1868
- Death Place: Grand Palace, Phra Nakhon, Bangkok, Siam
- Spouse(s): Queen Somanass Waddhanawathy;
Queen Debsirindra;
Princess Pannarai - Children: 83 including Chulalongkorn
Rama III, King of Siam
- Full Name: Nangklao
- Coronation: 21 July 1824
- Reign: 21 July 1824 – 2 April 1851
- Predecessor: Buddha Loetla Nabhalai
- Successor: Mongkut
- Born: 31 March 1788
- Birth Place: Grand Palace, Phra Nakhon, Bangkok, Siam
- Died: 2 April 1851
- Death Place: Grand Palace, Phra Nakhon, Bangkok, Siam
- Children: 52
Rama II, King of Siam
- Full Name: Phra Phutthaloetla Naphalai
- Coronation: 1809
- Reign: 7 September 1809 – 21 July 1824
- Predecessor: Phutthayotfa Chulalok
- Successor: Nangklao
- Born: 24 February 1767
- Birth Place: Amphawa, Samut Songkhram, Ayutthaya Kingdom
- Died: 21 July 1824
- Death Place: Grand Palace, Phra Nakhon, Bangkok, Siam
- Spouse(s): Sri Suriyendra (queen); Kunthon Thipphayawadi Sri Sulalai
- Children: 73
Rama I, King of Siam
- Full Name: Phra Phutthayotfa Chulalok
- Coronation: 21 June 1782
- Reign: 6 April 1782 – 7 September 1809
- Predecessor: Taksin
- Successor: Phra Phutthaloetla Naphala
- Born: 20 March 1736
- Birth Place: Ayutthaya, Kingdom of Ayutthaya
- Died: 7 September 1809
- Death Place: Grand Palace, Bangkok, Siam
- Internment: Wat Pho, Bangkok, Thailand
- Spouse(s): Amarindra
- Children: 43
Taksin, King of Thonburi
- Full Name: Taksin the Great
- Coronation: 28 December 1767
- Reign: 28 December 1767 – 6 April 1782
- Predecessor: Ekkathat
- Successor: Buddha Yodfa Chulaloke
- Born: 22 March 1734
- Birth Place: Ayutthaya, Ayutthaya Kingdom
- Died: 7 April 1782
- Death Place: Phra Racha Wang Derm, Thon Buri, Thonburi Kingdom
- Alma Mater: Buddhist monastery
- Spouse(s): Princess Batboricha
- Children: 31
Ekkathat, King of Ayutthaya
- Full Name: Ekkathat
- Reign: 1758–7 April 1767
- Predecessor: Uthumphon
- Successor: Taksin
- Born: 1718
- Died: 17 April 1767
- Death Place: Ayutthaya, Ayutthaya Kingdom
- Spouse(s): Maengmao, the Princess Wimonphat
- Children: Sirichanthrathewi; Praphaikuman; Praphansuriyawong; Suthatkumara; Rutchathewi; Set; Dokmaduea
Uthumphon, King of Ayutthaya
- Full Name: Uthumphon Mahaphon Phinit
- Reign: 1758
- Predecessor: Borommakot
- Successor: Ekkathat
- Died: 1796
- Death Place: Mandalay, Konbaung Kingdom
Borommakot, King of Ayutthaya
- Full Name: Borommakot
- Reign: 1733–1758
- Predecessor: Thai Sa
- Successor: Uthumphon
- Born: 1680
- Died: 1758
- Death Place: Ayutthaya, Ayutthaya Kingdom
- Spouse(s): Aphainuchit; Phiphit Montri
- Children: 109
Thai Sa, King of Ayutthaya
- Full Name: Thai Sa
- Reign: 1709–1733
- Predecessor: Suriyenthrathibodi
- Successor: Borommakot
- Died: 1733
- Death Place: Ayutthaya, Ayutthaya Kingdom
- Spouse(s): Princess Rachanurak
- Children: 10
Suriyenthrathibodi, King of Ayutthaya
- Full Name: Sanphet VIII
- Reign: 1703–1709
- Predecessor: Phetracha
- Successor: Thai Sa
- Died: 1709
- Death Place: Ayutthaya, Ayutthaya Kingdom
- Children: Thai Sa; Borommakot; Princess Kaeo; Princess Thapthim
Phetracha, King of Ayutthaya
- Full Name: Phetracha
- Reign: 11 July 1688 – 5 February 1703
- Predecessor: Narai
- Successor: Suriyenthrathibodi
- Born: 1632
- Died: 5 February 1703
Narai, King of Ayutthaya
- Full Name: Narai the Great
- Reign: 26 October 1656 – 11 July 1688
- Predecessor: Si Suthammaracha
- Successor: Phetracha
- Born: 16 February 1633
- Died: 11 July 1688
- Spouse(s): Suriyong Ratsami
- Children: Sudawadi; Princess Yothathep
Si Suthammaracha, King of Ayutthaya
- Full Name: Si Suthammaracha Sanphet VII
- Reign: 9 August 1656 – 26 October 1656
- Predecessor: Chao Fa Chai
- Successor: Narai
- Died: 26 October 1656
- Death Place: Ayutthaya, Ayutthaya Kingdom
Chai, King of Ayutthaya
- Full Name: Chao Fa Chai
- Reign: 8-9 August 1656
- Predecessor: Prasat Thong
- Successor: Si Suthammaracha
- Died: 11 August 1656
- Death Place: Ayutthaya, Ayutthaya Kingdom
Prasat Thong, King of Ayutthaya
- Full Name: Prasatthong
- Reign: 1629–1656
- Predecessor: Athittayawong
- Successor: Chai
- Born: 1599
- Died: 8 August 1656
- Spouse(s): Princess Sirithida
- Children: Chai; Narai; Traiphuwanathittayawong;Thong; Intharacha; Aphaiyathot; Noi; Yothathip
Athittayawong, King of Ayutthaya
- Full Name: Athittayawong
- Reign: 1629
- Predecessor: Chetthathirat
- Successor: Prasat Thong
- Born: 1618
- Died: 1629
- Death Place: Wat Khok Phraya, Ayutthaya, Ayutthaya Kingdom
Chetthathirat, King of Ayutthaya
- Full Name: Chetthathirat
- Reign: 1628–1629
- Predecessor: Songtham
- Successor: Athittayawong
- Died: 1629
- Death Place: Wat Khok Phraya, Ayutthaya, Ayutthaya Kingdom
Songtham, King of Ayutthaya
- Full Name: Songtham
- Reign: 1610–1628
- Predecessor: Si Saowaphak
- Successor: Chetthathirat
- Born: 1590
- Died: 12 December 1628
Si Saowaphak, King of Ayutthaya
- Full Name: Si Saowaphak
- Reign: 1620
- Predecessor: Ekathotsarot
- Successor: Songtham
- Died: 1620
- Death Place: Wat Khok Phraya, Ayutthaya, Ayutthaya Kingdom
Ekathotsarot, King of Ayutthaya
- Full Name: Ekathotsarot
- Reign: 1605–1620
- Predecessor: Naresuan
- Successor: Si Saowaphak
- Born: 1556
- Birth Place: Phitsanulok, Ayutthaya Kingdom
- Died: 1620
- Death Place: Yutthaya, Ayutthaya Kingdom
Naresuan, King of Ayutthaya
- Full Name: Naresuan the Great
- Reign: 1 July 1590 – 25 April 1605
- Predecessor: Mahathammarachathirat
- Successor: Ekathotsarot
- Born: 1555-1556
- Died: 25 April 1605
- Death Place: Monday, 8th waxing of Sixth Siamese month (Vaisakha), 967 CS Lan Na
- Spouse(s): Mani Rattana; Ek Kasattri; Yodaya Mibaya
Maha Thammaracha, King of Ayutthaya
- Full Name: Maha Thammaracha
- Reign: 29 September 1569 – c. 30 June 1590
- Predecessor: Mahinthrathirat
- Successor: Naresuan
- Born: 1509
- Died: 30 June 1590
- Spouse(s): Wisutkasat
Mahinthrathirat, King of Ayutthaya
- Full Name: Mahinthrathirat
- Reign: 15 April 1569 – 2 August 1569
- Predecessor: Maha Chakkraphat
- Successor: Maha Thammaracha Thirat
- Born: 1539
- Died: c. late 1569
- Previous Positions: Viceroy of Ayutthaya (1568–1569)
Maha Chakkraphat, King of Ayutthaya
- Full Name: Maha Chakkraphat
- Reign: 12 May 1568 – 15 April 1569
- Predecessor: Mahinthrathirat
- Successor: Mahinthrathirat
- Born: 1509
- Died: 15 April 1569
- Death Place: Ayutthaya
- Spouse(s): Sri Suriyothai
- Previous Positions: King of Siam (1548 – 18 February 1564)
Worawongsathirat, King of Ayutthaya
- Full Name: Worawongsathirat
- Reign: 1548
- Predecessor: Yotfa
- Successor: Maha Chakkraphat
- Died: 11 November 1548
- Death Place: Plamo Canal, beside Sabua Canal, Ayutthaya Kingdom
- Spouse(s): Si Suda Chan
- Children: Uthong Dynasty
Yotfa, King of Ayutthaya
- Full Name: Yotfa
- Reign: 1546–1548
- Predecessor: Chairachathirat
- Successor: Worawongsathirat
- Born: 1536
- Died: 10 June 1548
- Death Place: Khok Phraya Temple (now in Ayutthaya, Ayutthaya Province)
Chairachathirat, King of Ayutthaya
- Full Name: Chairachathirat
- Reign: 1534–1546
- Predecessor: Ratsadathirat
- Successor: Yotfa
- Died: 1546
- Spouse(s): Chitwadi; Sri Sudachan
- Children: Yotfa; Sisin
Ratsadathirat, King of Ayutthaya
- Full Name: Ratsadathirat
- Reign: 1533
- Predecessor: Borommarachathirat IV
- Successor: Chairachathirat
- Born: 890 LE (1528/29 CE)
- Died: 896 LE (1534/35 CE)
Borommarachathirat IV, King of Ayutthaya
- Full Name: Somdet Phra Borommaracha Thirat IV
- Reign: 1529–1533
- Predecessor: Ramathibodi II
- Successor: Ratsadathirat
- Died: 1533
Ramathibodi II, King of Ayutthaya
- Full Name: Somdet Phra Ramathibodi II
- Reign: 1491–1529
- Predecessor: Borommarachathirat III
- Successor: Borommarachathirat IV
- Born: 1473
- Died: 1529
- Children: Athittayawong; Chairacha; Thianracha
Borommarachathirat III, King of Ayutthaya
- Full Name: Somdet Phra Borommaracha Thirat III
- Reign: 1488–1491
- Predecessor: Trailokanat
- Successor: Ramathibodi II
- Died: 1491
Borommatrailokkanat, King of Ayutthaya
- Full Name: Borommatrailokkanat
- Reign: 1448–1488
- Predecessor: Borommarachathirat II
- Successor: Borommaracha III
- Born: 1431
- Birth Place: Ayutthaya Kingdom
- Died: 1488
- Death Place: Ayutthaya Kingdom
- Children: Borommaracha III; Ramathibodi II; Intharacha
Borommarachathirat II, King of Ayutthaya
- Full Name: Borommarachathirat II
- Reign: 1424–1448
- Predecessor: Intha Racha
- Successor: Trailokanat
- Died: 1448
- Children: Trailokanat
Intharacha, King of Ayutthaya
- Full Name: Intharacha
- Reign: 1408–1424
- Predecessor: Rama Ratchathirat
- Successor: Borommarachathirat II
- Born: 1359
- Died: 1424
Ramrachathirat, King of Ayutthaya
- Full Name: Ramrachathirat
- Reign: 1395 – 1409
- Predecessor: Ramesuan
- Successor: Inracha
- Born: 1372
Ramesuan, King of Ayutthaya
- Full Name: Somdet Phra Ramesuan
- Reign: 1388–1395
- Predecessor: Thong Lan
- Successor: Ramaracha
- Born: 1339
- Died: 1395
Thong Lan, King of Ayutthaya
- Full Name: King Thong Lan
- Reign: 1388
- Predecessor: Borommarachathirat I
- Successor: Ramesuan
- Born: ca 735 LE (1373/74 CE)
- Died: 750 LE (1388/89 CE)
- Death Place: Wat Khok Phraya (in present-day Phra Nakhon Si Ayutthaya Province, Thailand)
Borommarachathirat I, King of Ayutthaya
- Full Name: Borommarachathirat I
- Reign: 1370–1388
- Predecessor: Ramesuan
- Successor: Thong Lan
- Died: 1388
Ramesuan, King of Ayutthaya
- Full Name: Somdet Phra Ramesuan
- Reign: 1369–1370
- Predecessor: Uthong
- Successor: Borommaracha I
- Born: 1339
- Died: 1395
Uthong, King of Ayutthaya
- Full Name: Uthong Ramathibodi I
- Reign: 1350–1369
- Predecessor: Dynasty Established
- Successor: Ramesuan
- Born: 10 March 1314
- Died: 1369
- Children: Ramesuan
Maha Thammaracha IV, King of Ayutthaya
- Full Name: Phra Mahathammaracha IV
- Reign: 1419–1438
- Predecessor: Sai Lue Thai
- Successor: Uthong
- Died: 1438
Maha Thammaracha III, King of Sukhothai
- Full Name: Phra Maha Thammaracha III
- Reign: 1400–1419
- Predecessor: Lue Thai
- Successor: Borommapan
- Died: 1419
- Children: Borommapan; Phaya Ram
Maha Thammaracha II, King of Sukhothai
- Full Name: Phra Maha Thammaracha II
- Reign: 1368 - 1399
- Predecessor: Maha Thammaracha I
- Successor: Sai Lue Thai
- Birth Place: Sukhothai Kingdom
- Died: 1399
- Death Place: Sukhothai Kingdom
Maha Thammaracha I, King of Sukhothai
- Full Name: Phra Maha Thammaracha I
- Reign: 1347 - 1368
- Predecessor: Ngua Nam Thum
- Successor: Lue Thai
- Born: c. 1300
- Birth Place: Sukhothai Kingdom
- Died: 1368
- Death Place: Sukhothai Kingdom
- Children: Lue Thai
Ngua Nam Thum, King of Sukhothai
- Full Name: Ngua Nam Thum
- Reign: 1866 BE (1323/24 CE) – 1890 BE (1347/48 CE)
- Predecessor: Loe Thai
- Successor: Mahathammaracha I
- Died: 1890 BE
Loe Thai, King of Sukhothai
- Full Name: Loe Thai
- Reign: 1298 - 1323
- Predecessor: Ram Khamhaeng
- Successor: Ngua Nam Thum
- Born: c. 1262
- Birth Place: Sukhothai Kingdom
- Died: 1323
- Death Place: Sukhothai Kingdom
- Children: Li Thai (Maha Thammaracha I); May Hnin Htapi
Ram Khamhaeng, King of Sukhothai
- Full Name: Ram Khamhaeng
- Reign: 1279 - 1298
- Predecessor: Ban Mueang
- Successor: Loe Thai
- Born: c. 1237/1247
- Birth Place: Khmer Empire/Sukhothai Kingdom
- Died: 1298
- Death Place: Sukhothai Kingdom
- Children: Loe Thai;May Hnin Thwe-Da
Ban Mueang, King of Sukhothai
- Full Name: Ban Mueang
- Reign: circa 1822 BE (1279/80 CE)
- Predecessor: Si Inthrathit
- Successor: Ram Khamhaeng
- Died: 1822 BE
- Children: Ngua Nam Thum
Si Inthrathit, King of Sukhothai
- Full Name: Si Inthrathit
- Reign: 1238 - 1270
- Successor: Ban Mueang
- Born: 1188
- Birth Place: Khmer Empire
- Died: 1270
- Death Place: Sukhothai Kingdom
- Spouse(s): Sueang
- Children: Ban Mueang; Ram Khamhaeng the Great; Three other children
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