List of monarchs of Thailand

The Royal Standard of the King of Thailand. The Garuda in the middle has been the symbol of the monarchy since the times of Ayutthaya.

This article lists the monarchs of Thailand from the foundation of the Sukhothai Kingdom in 1238 until the present day.

Sukhothai Kingdom

Phra Ruang dynasty (1238–1368, 1368–1438)

No.	Portrait	Name	Birth	Reign from	Reign until	Death	Notes
1		Pho Khun Si Inthrathit (Bang Klang Haw)	1188	1238	1270 (30 years) (82 years old)		• First King of Sukhothai  • Ally with Por Khun Pha Mueang defeating the Khmer.
2	100px	Pho Khun Ban Mueang	?	1270–1271 (1 year) (42 years old)			• Son of Si Inthrathit
3		Pho Khun Ram Khamhaeng the Great (Pho Khun Ram Racha)	c. 1237-1247	1279	1298 (19 years) (51-61 years old)		• Younger brother of Ban Mueang  • Son of Si Inthrathit
4	100px	Phaya Loethai	?	1298	1323 (25 years) (61 years old)		• Son of Ram Khamhaeng
5	100px	Phaya Nguanamthom	?	1323	1347 (24 years) (81 years old)		• Cousin of Loethai  • Son of Ban Mueang
6	100px	Phaya Lithai (Phra Mahathammaracha I)	?	1347	1368 (21 years) (68 years old)		• Cousin of Nguanamthom  • Son of Loethai
Under the suzerainty of the Kingdom of Ayutthaya
7	100px	Phaya Luethai (Phra Mahathammaracha II)	?	1368	1399 (31 years)		• Son of Lithai
8	100px	Phaya Saileuthai (Phra Mahathammaracha III)	?	1400	1419 (19 years)		• Son of Luethai
9	100px	Phaya Borommapan (Phra Mahathammaracha IV)	?	1419	1438 (19 years)		• Son of Sailuethai

Ayutthaya Kingdom

1st Uthong dynasty (1350–1370)

No.	Portrait	Name	Birth	Reign from	Reign until	Death	Notes
1		Somdet Phra Chao Uthong (Somdet Phra Ramathibodi I)	1314	1350	1369 (20 years)		• First King of Ayutthaya
2	100px	Somdet Phra Ramesuan	1339	1369	1370 (less than one year) (abdicated)	1395	• Son of Uthong

1st Suphannaphum dynasty (1370–1388)

No.	Portrait	Name	Birth	Reign from	Reign until	Death	Notes
3	100px	Somdet Phra Borommarachathirat I (Khun Luang Pha Ngua)	?	1370	1388 (18 years)		• Husband of Uthong's older sister  • Usurper  • Former Lord of Suphanburi
4	100px	Somdet Phra Chao Thong Lan (Chao Thong Chan)	?	1388 (7 days) (usurped)			• Son of Borommarachathirat I

2nd Uthong dynasty (1388–1409)

No.	Portrait	Name	Birth	Reign from	Reign until	Death	Notes
(2)	100px	Somdet Phra Ramesuan	1339	1388	1395 (7 years)		• Former King reclaiming the throne  • Son of Uthong
5	100px	Somdet Phra Ramrachathirat	1356	1395	1409 (14 years) (usurped)	?	• Son of Ramesuan

2nd Suphannaphum dynasty (1409–1569)

No.	Portrait	Name	Birth	Reign from	Reign until	Death	Notes
6	100px	Somdet Phra Intharacha I (Phra Chao Nakhon In)	1359	1409	1424 (15 years)		• Nephew of Borommarachathirat I  • Former Lord of Suphanburi, offered crown
7	100px	Somdet Phra Chao Sam Phraya (Somdet Phra Borommarachathirat II)	?	1424	1448 (24 years)		• Son of Inthracha I
8	100px	Somdet Phra Borommatrailokkanat	1431	1448	1488 (40 years)		• Son of Borommarachathirat II
9	100px	Somdet Phra Borommaracha III (Intharacha II)	?	1488	1491 (3 years)		• Son of Borommatrailokkanat
10	100px	Somdet Phra Ramathibodi II (Chettathirat I)	1473	1491	1529 (38 years)		• Younger brother of Borommarachathirat III  • Son of Borommatrailokkanat
11	100px	Somdet Phra Borommarachathirat IV (Borommarachathirat No Phutthangkun) (Phra Athittayawong)	?	1529	1533 (4 years)		• Son of Ramathibodi II
12	100px	Phra Ratsadathirat	1529	1533 (4 months) (usurped)			• Son of Borommarachathirat IV  • Child King, reign under regency
13	100px	Somdet Phra Chairacha (Chairachathirat) (Phra Chai)	?	1533	1546 (13 years)		• Uncle of Ratsadathirat  • Son of Ramathibodi II  • Usurper
14	100px	Phra Yotfa (Phra Kaeofa)	1535	1546	1548 (2 years)		• Son of Chairacha
-	100px	Khun Worawongsathirat (Khun Chinnarat) (Bun Si)	?	11 November 1548 (42 days) (Removed)			• Usurper monarch, not accepted by some historians
15	100px	Somdet Phra Maha Chakkraphat (Phra Chao Chang Phueak) (Phra Thianracha)	1509	1548	1564 (16 years)		• Son of Ramathibodi II  • Younger brother of Borommarachathirat IV and Chairacha  • Seized the throne from usurper  • Became a Buddhist monk at Pegu (1564–1568)
First Fall of Ayutthaya
Vassal of Burma (1564–1568)
16	100px	Somdet Phra Mahinthrathirat	1539	1564	1569 (4 years as vassal king, 1 year as king)		• Son of Maha Chakkraphat and Queen Suriyothai
Vassal of Burma (1569–1584)

Sukhothai dynasty (1569–1629)

No.	Portrait	Name	Birth	Reign from	Reign until	Death	Notes
17	100px	Somdet Phra Mahathammarachathirat (Sanphet I)	1517	1569	29 July 1590 (21 years)		• Grand son of Chairachathirat  • Installed as vassal of Bayinnaung of Burma, declared independence in 1584
18		Somdet Phra Naresuan the Great (Sanphet II) (Phra Naret)	25 April 1555	29 July 1590	7 April 1605 (15 years)		• Son of Mahathammarachathirat
19		Somdet Phra Ekathotsarot (Sanphet III)	1557	25 April 1605	1620 (15 years)		• Brother of Naresuan  • Son of Mahathammarachathirat
20	100px	Somdet Phra Si Saowaphak (Sanphet IV)	?	1620 (less than a year, murdered)			• Son of Ekathotsarot
21	100px	Somdet Phra Songtham (Borommaracha I)	1590	1620	12 December 1628 (8 years)		• Son of "Ekathotsarot", invited to take the throne after leaving the Sangha
22	100px	Somdet Phra Chetthathirat (Borommaracha II)	c. 1613	1628	1628–1629 (1 year and 7 months) (mk)		• Son of Songtham
23	100px	Phra Athittayawong	1618	1629 (36 days) (usurped)			• Younger brother of Chetthathirat  • Son of Songtham

Prasat Thong dynasty (1629–1688)

No.	Portrait	Name	Birth	Reign from	Reign until	Death	Notes
24	100px	Somdet Phra Chao Prasat Thong (Sanphet V)	1599	1629	1656 (27 years)		• Usurper, formerly the Kalahom  • Rumored to be a son of Ekathotsarot
25	100px	Somdet Chao Fa Chai (Sanphet VI)	?	1656 (9 months) (usurped)			• Son of Prasat Thong
26	100px	Somdet Phra Si Suthammaracha (Sanphet VII)	?	June 1656	26 October 1656 (2 months 17 Days) (usurped)		• Usurper, Uncle of Chao Fa Chai  • Younger brother of Prasat Thong
27		Somdet Phra Narai the Great (Ramathibodi III)	16 February 1633	26 October 1656	11 July 1688 (32 years)		• Usurper, nephew of Si Suthammaracha  • Son of Prasat Thong  • Half-brother of Chao Fa Chai

Ban Phlu Luang dynasty (1688–1767)

No.	Portrait	Name	Birth	Reign from	Reign until	Death	Notes
28	100px	Somdet Phra Phetracha	1632	1688	1703 (15 years)		• Usurper, cousin of Narai  • Former commander of the Royal Elephant Corps
29	100px	Somdet Phra Suriyenthrathibodi (Sanphet VIII) (Phra Chao Suea)	?	1703	1709 (7 years)		• Rumored to be a son of Narai
30	100px	Somdet Phra Chao Yu Hua Thai Sa (Sanphet IX)	1679	1709	1733 (24 years)		• Son of Suriyenthrathibodi
31	100px	Somdet Phra Chao Yu Hua Borommakot	1680	1733	1758 (26 years)		• Brother of Thai Sa, Former Front Palace  • Son of Suriyenthrathibodi
32	100px	Somdet Phra Chao Uthumphon (Ramathibodi IV) (Khun Luang Ha Wat)	?	1758 (2 months) (usurped)		1796	• Son of Borommakot
33	100px	Somdet Phra Chao Ekkathat (Phra Thinang Suriyat Amarin) (Borommaracha III)	?	1758	7 April 1767 (9 years) (removed)	17 April 1767	• Brother of Uthumphon  • Usurper, Former Front Palace  • Son of Borommakot
Second Fall of Ayutthaya

Thonburi Kingdom

Thonburi dynasty (1768–1782)

No.	Portrait	Name	Birth	Reign from	Coronation	Reign until	Death	Notes
1		Taksin the Great (Phra Chao Krung Thonburi) (Borommaracha IV)	17 April 1734	6 November 1767	28 December 1768	6 April 1782 (14 years) (removed)	7 April 1782 (47 years old) (executed)	• Only King of Thonburi Period

Rattanakosin Kingdom and Kingdom of Thailand (1782–present)

Chakri dynasty (1782–present)

No.	Portrait	Name	Birth	Reign from	Coronation	Reign until	Death	Notes
1		Phrabat Somdet Phra Ramathibodi Sri Sinthra Maha Chakri Boromanat Phra Phutthayotfa Chulalok the Great (Rama I)	20 March 1737	6 April 1782	10 June 1782	7 September 1809 (27 years) (72 years old)		• First King of Rattanakosin  • Friend and Father-in-law of Taksin
2		Phrabat Somdet Phra Ramathibodi Sri Sinthra Maha Itsarasunthon Phra Phutthaloetla Naphalai (Rama II)	24 February 1767	7 September 1809		21 July 1824 (14 years) (57 years old)		• Son of Rama I and Queen Amarindra
3		Phrabat Somdet Phra Ramathibodi Sri Sinthra Maha Jessadabodindra Phra Nang Klao Chao Yu Hua (Rama III) (Phra Maha Jesataraj Chao)	31 March 1788	21 July 1824		2 April 1851 (26 years) (63 years old)		• Son of Rama II and Princess Consort Sri Sulalai
4		Phrabat Somdet Phra Paramenthra Maha Mongkut Phra Chom Klao Chao Yu Hua (Rama IV)	18 October 1804	2 April 1851	6 April 1851 (1st time) 15 May 1851 (2nd time)	1 October 1868 (17 years) (63 years old)		• Half-brother of Rama III  • Son of Rama II and Queen Sri Suriyendra
5		Phrabat Somdet Phra Paraminthra Maha Chulalongkorn Phra Chulachomklao Chao Yu Hua the Great (Rama V) (Phra Piya Maharaj)	20 September 1853	1 October 1868	11 November 1868 (1st time) 16 November 1873 (2nd time)	23 October 1910 (42 years) (57 years old)		• Son of Rama IV and Queen Debsirindra  • Under Regency of Grand Duke Sri Suriyavongs from 1868–1873
6		Phrabat Somdet Phra Paramenthra Maha Vajiravudh Phra Mongkut Klao Chao Yu Hua (Rama VI) (Phra Maha Dhiraraj Chao)	1 January 1881	23 October 1910	11 November 1911	26 November 1925 (15 years) (44 years old)		• Son of Rama V and Queen Saovabha Phongsri
7		Phrabat Somdet Phra Paraminthra Maha Prajadhipok Phra Pok Klao Chao Yu Hua (Rama VII)	8 November 1893	26 November 1925	25 February 1926	2 March 1935 (9 years) (abdicated)	30 May 1941 (47 years old)	• Younger brother of Rama VI  • Son of Rama V and Queen Saovabha Phongsri
8		Phrabat Somdet Phra Paramenthra Maha Ananda Mahidol Phra Atthama Ramathibodin (Rama VIII)	20 September 1925	2 March 1935	—	9 June 1946 (11 years) (20 years old)		• Nephew of Rama VII  • Grandson of Rama V by Mahidol Adulyadej  • Under Regency from 1935–1946
The country's name was changed from Siam to Thailand in 1939
9	100px	Phrabat Somdet Phra Boromchanakathibet Maha Bhumibol Adulyadej Maharaj Borommanatbophit (Rama IX) (Somdet Phra Phatthara Maharat)	5 December 1927	9 June 1946	5 May 1950	13 October 2016 (70 years 126 days) (88 years old)		• Younger brother of Rama VIII  • Grandson of Rama V by Mahidol Adulyadej
10	100px	Phrabat Somdet Phra Paramenthra Ramathibodhi Srisin Maha Vajiralongkorn Mahison Bhumibol Rajavarangkun Kitisirisumbun Adulyadej Sayaminthrathibet Ratwarodom Borommanat Bophit Phra Vajira Klao Chao Yu Hua (Rama X)	28 July 1952	13 October 2016	4 May 2019	Present (Incumbent: ) (71 years old)		• Only son of Rama IX and Queen Sirikit  • 2nd child of Rama IX

Timeline of monarchs

See also

• Thai monarchs' family tree
• Monarchy of Thailand
• Kings of Lanna
• List of Thai royal consorts
• Rama (Kings of Thailand)
• Chakri dynasty
• Regent of Thailand
• Thailand