List of monarchs of Thailand

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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[edit]

Phra Ruang dynasty (1238–1368, 1368–1438)[edit]

No. Portrait Name Birth Reign from Reign until Death Relationship with predecessor(s)
1 พ่อขุนศรีอินทราทิตย์.jpg Pho Khun Sri Indraditya
(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 No picture Thai monarchs.svg Pho Khun Ban Mueang ? 1270–1271 (1 year) (42 years old)  • Son of Sri Indraditya
3 Ramkhamhaeng the Great.jpg 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 Sri Indraditya
4 No picture Thai monarchs.svg Phaya Loethai ? 1298 1323 (25 years) (61 years old)  • Son of Ram Khamhaeng
5 No picture Thai monarchs.svg Phaya Nguanamthom ? 1323 1347 (24 years) (81 years old)  • Cousin of Loethai
 • Son of Ban Mueang
6 Mahathammaracha I.JPG 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 No picture Thai monarchs.svg Phaya Luethai
(Phra Mahathammaracha II)
? 1368 1399 (31 years)  • Son of Lithai
8 No picture Thai monarchs.svg Phaya Saileuthai
(Phra Mahathammaracha III)
? 1400 1419 (19 years)  • Son of Luethai
9 No picture Thai monarchs.svg Phaya Borommapan
(Phra Mahathammaracha IV)
? 1419 1438 (19 years)  • Son of Sailuethai

Ayutthaya Kingdom[edit]

1st Uthong dynasty (1350–1370)[edit]

No. Portrait Name Birth Reign from Reign until Death Relationship with predecessor(s)
1 อนุสาวรีย์พระเจ้าอู่ทอง342.jpg Somdet Phra Chao Uthong
(Somdet Phra Ramathibodi I)
1314 1350 1369 (20 years)  • First King of Ayutthaya
2 (1) No picture Thai monarchs.svg Somdet Phra Ramesuan 1339 1369 1370 (less than one year)
(abdicated)
1395  • Son of Uthong

1st Suphannaphum dynasty (1370–1388)[edit]

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

2nd Uthong dynasty (1388–1409)[edit]

No. Portrait Name Birth Reign from Reign until Death Relationship with predecessor(s)
2 No picture Thai monarchs.svg Somdet Phra Ramesuan 1339 1388 1395 (7 years)  • Former King reclaiming the throne
 • Son of Uthong
5 No picture Thai monarchs.svg Somdet Phra Ramrachathirat 1356 1395 1409 (14 years)
(usurped)
?  • Son of Ramesuan

2nd Suphannaphum dynasty (1409–1569)[edit]

No. Portrait Name Birth Reign from Reign until Death Relationship with predecessor(s)
6 No picture Thai monarchs.svg Somdet Phra Intharacha I
(Phra Chao Nakhon In)
1359 1409 1424 (15 years)  • Nephew of Borommarachathirat I
 • Former Lord of Suphanburi, offered crown
7 No picture Thai monarchs.svg Somdet Phra Chao Sam Phraya
(Somdet Phra Borommarachathirat II)
? 1424 1448 (24 years)  • Son of Indraraja I
8 No picture Thai monarchs.svg Somdet Phra Borommatrailokkanat 1431 1448 1488 (40 years)  • Son of Borommarachathirat II
9 No picture Thai monarchs.svg Somdet Phra Borommaracha III
(Intharacha II)
? 1488 1491 (3 years)  • Son of Borommatrailokkanat
10 No picture Thai monarchs.svg Somdet Phra Ramathibodi II
(Chettathirat I)
1473 1491 1529 (38 years)  • Younger brother of Borommarachathirat III
 • Son of Trilokanath
11 No picture Thai monarchs.svg Somdet Phra Borommarachathirat IV
(Borommarachathirat No Phutthangkun)
(Phra Athittayawong)
? 1529 1533 (4 years)  • Son of Ramathibodi II
12 No picture Thai monarchs.svg Phra Ratsadathirat 1529 1533 (4 months)
(usurped)
 • Son of Borommarachathirat IV
 • Child King, reign under regency
13 No picture Thai monarchs.svg Somdet Phra Chairacha
(Chairachathirat)
(Phra Chai)
? 1533 1546 (13 years)  • Uncle of Ratsadathirat
 • Son of Ramathibodi II
 • Usurper
14 No picture Thai monarchs.svg Phra Yodfa
(Phra Kaewfa)
1535 1546 1548 (2 years)  • Son of Chairacha
- No picture Thai monarchs.svg Khun Worawongsathirat
(Khun Chinnarat)
(Bun Si)
? 11 November 1548 (42 days)
(Removed)
 • Usurper monarch, not accepted by some historians
15 No picture Thai monarchs.svg Somdet Phra Maha Chakkraphat
(Phra Chao Chang Pueak)
(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 No picture Thai monarchs.svg 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)[edit]

No. Portrait Name Birth Reign from Reign until Death Relationship with predecessor(s)
17 No picture Thai monarchs.svg Somdet Phra Mahathammarachathirat
(Sanphet I)
1517 1569 29 July 1590 (21 years)  • Former Lord of Phitsanulok
 • Installed as vassal of Bayinnaung of Burma, declared independence in 1584
18 KingNU.jpg Somdet Phra Naresuan the Great
(Sanphet II)
(Phra Nares)
25 April 1555 29 July 1590 7 April 1605 (15 years)  • Son of Mahathammarachathirat
19 Ekatotsarotwpamok06.jpg Somdet Phra Ekathotsarot
(Sanphet III)
1557 25 April 1605 1620 (15 years)  • Brother of Naresuan
 • Son of Mahathammarachathirat
20 No picture Thai monarchs.svg Somdet Phra Si Saowaphak
(Sanphet IV)
? 1620 (less than a year, murdered)  • Son of Ekathotsarot
21 No picture Thai monarchs.svg 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 No picture Thai monarchs.svg Somdet Phra Chetthathirat
(Borommaracha II)
c. 1613 1628 1628–1629 (1 year and 7 months)
(mk)
 • Son of Songtham
23 No picture Thai monarchs.svg Phra Athittayawong 1618 1629 (36 days)
(usurped)
 • Younger brother of Chetthathirat
 • Son of Songtham

Prasat Thong dynasty (1629–1688)[edit]

No. Portrait Name Birth Reign from Reign until Death Relationship with predecessor(s)
24 No picture Thai monarchs.svg Somdet Phra Chao Prasat Thong
(Sanphet V)
1599 1629 1656 (27 years)  • Usurper, formerly the Kalahom
 • Rumored to be a son of Ekathotsarot
25 No picture Thai monarchs.svg Somdet Chao Fa Chai
(Sanphet VI)
? 1656 (9 months)
(usurped)
 • Son of Prasat Thong
26 No picture Thai monarchs.svg 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 Narai.JPG 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)[edit]

No. Portrait Name Birth Reign from Reign until Death Relationship with predecessor(s)
28 No picture Thai monarchs.svg Somdet Phra Phetracha 1632 1688 1703 (15 years)  • Usurper, cousin of Narai
 • Former commander of the Royal Elephant Corps
29 พระบรมรูป สมเด็จพระเจ้าเสือ วัดไทร.jpg Somdet Phra Suriyenthrathibodi
(Sanphet VIII)
(Phra Chao Suea)
? 1703 1709 (7 years)  • Rumored to be a son of Narai
30 No picture Thai monarchs.svg Somdet Phra Chao Yu Hua Thai Sa
(Sanphet IX)
1679 1709 1733 (24 years)  • Son of Suriyenthrathibodi
31 No picture Thai monarchs.svg Somdet Phra Chao Yu Hua Boromakot 1680 1733 1758 (26 years)  • Brother of Thai Sa, Former Front Palace
 • Son of Suriyenthrathibodi
32 No picture Thai monarchs.svg Somdet Phra Chao Uthumphon
(Ramathibodi IV)
(Khun Luang Ha Wat)
? 1758 (2 months)
(usurped)
1796  • Son of Boromakot
33 No picture Thai monarchs.svg 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 Boromakot
Second Fall of Ayutthaya

Thonburi Kingdom[edit]

Thonburi dynasty (1768–1782)[edit]

No. Portrait Name Birth Reign from Coronation Reign until Death Relationship with predecessor(s)
1 KingTaksinfromItalymuseum.JPG 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)[edit]

Chakri dynasty (1782–present)[edit]

No. Portrait Name Birth Reign from Coronation Reign until Death Relationship with predecessor(s)
1 Buddha Yodfa Chulaloke portrait.jpg 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 Buddha Loetla Nabhalai portrait.jpg 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 Nangklao portrait.jpg 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
Rama4 portrait (cropped).jpg
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
King Chulalongkorn.jpg
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
King Vajiravudh.jpg
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
Prajadhipok portrait.jpg
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
King Ananda Mahidol portrait photograph.jpg
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 1948
9
Portrait painting of King Bhumibol Adulyadej.jpg
Phrabat Somdet Phra Paraminthra
Maha Bhumibol Adulyadej
Siamindradhiraj Paramanath Bophit
the Great
(Rama IX)
(Somdet Phra Phatthara Maharat)
5 December 1927 9 June 1946 5 May 1950 13 October 2016
(70 years)
(89 years old)
 • Younger brother of Rama VIII
 • Grandson of Rama V by Mahidol Adulyadej
10
HRH Vajiralongkorn (Cropped).jpg
Somdet Phra Chao Yu Hua
Maha Vajiralongkorn
Bodindradebayavarangkun
(Rama X)
28 July 1952 13 October 2016 TBA[1] Present
(Incumbent: 347 days)
(65 years old)
 • Only son of Rama IX and Queen Sirikit
 • 2nd child of Rama IX

Timeline of monarchs[edit]

Vajiralongkorn Bhumibol Adulyadej Ananda Mahidol Prajadhipok Vajiravudh Chulalongkorn Mongkut Rama III Rama II of Siam Rama I Taksin Ekkathat Uthumphon Boromakot Thai Sa Suriyenthrathibodi Phetracha Narai Si Suthammaracha Chao Fa Chai Prasat Thong Athittayawong Chetthathirat Songtham Si Saowaphak Ekathotsarot Naresuan Mahathammarachathirat Mahinthrathirat Maha Chakkraphat Worawongsathirat Yodfa Chairacha Ratsadathirat Borommarachathirat IV Ramathibodi II Borommaracha III Borommatrailokkanat Borommarachathirat II Intharacha (king of Ayutthaya) Ramrachathirat Ramesuan (king of Ayutthaya) Thong Lan Borommarachathirat I Ramesuan (king of Ayutthaya) Uthong Mahathammaracha IV Mahathammaracha III Mahathammaracha II Mahathammaracha I Ngua Nam Thum Loe Thai Ram Khamhaeng Ban Mueang Si Inthrathit

See also[edit]

Notes[edit]

Bibliography[edit]