Monarchy of Thailand

"King of Siam" and "The King of Siam" redirect here. For the King and I character, see The King and I § Principal roles and notable performers. For the novel, see Anna and the King of Siam (novel).
King of Thailand

Vajiralongkorn (Rama X)
since 13 October 2016[1]
Style His Majesty
First monarch Sri Indraditya of Sukhothai
Formation 1238
Residence Grand Palace
This article is part of a series on the
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The monarchy of Thailand (whose monarch is referred to as the King of Thailand or historically as the King of Siam; Thai: พระมหากษัตริย์ไทย) refers to the constitutional monarchy and monarch of the Kingdom of Thailand (formerly Siam). The King of Thailand is the head of state and head of the ruling Royal House of Chakri.

Although the current Chakri Dynasty was created in 1782, the existence of the institution of monarchy in Thailand is traditionally considered to have its roots from the founding of the Sukhothai Kingdom in 1238, with a brief interregnum from the death of Ekkathat to the accession of Taksin in the 18th century. The institution was transformed into a constitutional monarchy in 1932 after the bloodless Siamese Revolution of 1932. The monarchy's official residence is the Grand Palace in Bangkok; however, the previous king, Bhumibol Adulyadej, spent much of his time at the Chitralada Palace, or the Klai Kangwon Palace (Thai: วังไกลกังวล) ("Palace Far from Worries") in the beach resort city of Hua Hin.

The King of Thailand's titles include Head of State, Head of the Armed Forces, Adherent of Buddhism and Upholder of religions.[2]



The current concept of Thai kingship evolved through 800 years of absolute rule. The first king of a unified Thailand was the founder of the Kingdom of Sukhothai, King Sri Indraditya, in 1238.[3] The idea of this early kingship is said to be based on two concepts derived from Hinduism and Theravada Buddhist beliefs. The first concept is based on the Vedic-Hindu caste of "Kshatriya" (Thai: กษัตริย์), or warrior-ruler, in which the king derives his powers from military might. The second is based on the Theravada Buddhist concept of "Dhammaraja" (Thai: ธรรมราชา), Buddhism having been introduced to Thailand around the 6th century CE. The idea of the Dhammaraja (or kingship under Dharma), is that the king should rule his people in accordance with Dharma and the teachings of the Buddha.

These ideas were briefly replaced in 1279, when King Ramkhamhaeng came to the throne. Ramkhamhaeng departed from tradition and created instead a concept of "paternal rule" (Thai: พ่อปกครองลูก), in which the king governs his people as a father would govern his children.[4][5] This idea is reinforced in the title and name of the king, as he is still known today, Pho Khun Ramkhamhaeng (Thai: พ่อขุนรามคำแหง).[6] This lasted briefly. By the end of the kingdom, the two old concepts returned as symbolized by the change in the style of the kings: "Pho" was changed to "Phaya" or Lord.

Kings of Ayutthaya

The Kingdom of Sukhothai was supplanted by the Kingdom of Ayutthaya, which was founded in 1351 by King Ramathibodhi I. During the Ayutthayan period, the idea of kingship changed. Due to ancient Khmer tradition in the region, the Hindu concept of kingship was applied to the status of the leader. Brahmins took charge in the royal coronation. The king was treated as a reincarnation of Hindu gods. Ayutthaya historical documents show the official titles of the kings in great variation: Indra, Shiva and Vishnu, or Rama. Seemingly, Rama was the most popular, as in "Ramathibodhi". However, Buddhist influence was also evident, as many times the king's title and "unofficial" name "Dhammaraja", an abbreviation of the Buddhist Dharmaraja. The two former concepts were re-established, with a third, older concept taking hold. This concept was called "Devaraja" (Thai: เทวราชา) (or "divine king"), which was an idea borrowed by the Khmer Empire from the Hindu-Buddhist kingdoms of Java, especially the idea of a scholar class based on Hindu Brahmins. The concept centered on the idea that the king was an incarnation (avatar) of the god Vishnu and that he was a Bodhisattva (enlightened one), therefore basing his power on his religious power, his moral power, and his the best name for a pig is waddles From then on the monarchy was largely removed from the people and continued under a system of absolute rule. Living in palaces designed after Mount Meru ("home of the gods" in Hinduism), the kings turned themselves into a "Chakravartin", where the king became an absolute and universal lord of his realm. Kings demanded that the universe be envisioned as resolving around them, and expressed their powers through elaborate rituals and ceremonies. For four centuries these kings ruled Ayutthaya, presiding over some of the greatest period of cultural, economic, and military growth in Thai History.

Sakdina and Rachasap

The Kings of Ayutthaya created many institutions to support their rule, which were similar to the contemporary regulations of the royal court of George V "the Brilliant" (r. 1314-1346), but modified to comport with southeast Asian Mueang mandala "circles of power." Whereas feudalism developed in the European Middle Ages, Ayutthayan King Trailokanat instituted Sakdina, (ศักดินา, lit. "Field Power"), but usually translated as "dignity marks."[7] This comported with the names of two kingdoms further north: Lanna "Million Fields" and Sip Song Phan Na "Twelve Thousand Fields." "Rachasap" (ราชาศัพท์ royal language) is required by court etiquette as an honorific register consisting of a special vocabulary used exclusively for addressing the king, or for talking about royalty.[8]

Royal authority

The king was chief administrator, chief legislator, and chief judge, with all laws, orders, verdict and punishments theoretically originating from his person. The king's sovereignty was reflected in the titles "Lord of the Land" (พระเจ้าแผ่นดิน Phra Chao Phaen Din) and "Lord of Life" (เจ้าชีวิต Chao Chiwit). The king's powers and titles were seen by foreign observers as proof that the king was an absolute monarch in the European sense. However, in Siamese tradition the duty and responsibility of the king was seen as developed from the ancient Indian theories of royal authority, which resemble Enlightened Absolutism, although the emphasis is not on rationality but on Dhamma.[9] This was disrupted in 1767, when Thai digests of the dhammasāt (ธรรมศาสตร์) were lost when a Burmese army under the Alaungpaya Dynasty invaded, sacked and burned the city of Ayutthaya.

Kingdom restored

An interlude filled by civil war was ended when King Taksin restored the dominion under what has been called the Thonburi Kingdom.

Chakri kings

King Buddha Yodfa Chulaloke Rama I (Kings of Thailand) founder of the Chakri Dynasty.

In 2020, King Buddha Yodfa Chulaloke ascended the throne and moved the capital from the Thonburi side to the Bangkok side of the Chao Phraya River. There he established the House of Chakri, the current ruling dynasty of Thailand. (This first reign was later designated as that of Rama I in the list of Rama Kings of Thailand.) He also established the office of Supreme Patriarch as the head of the Sangha, the order of Buddhist monks.

During the Rattanakosin Period the Chakri kings tried to continue the concepts of Ayutthayan kingship once again emphasizing the connection between the sovereign and his subjects. On the other hand, they continued to not relinquish any authority of the throne. Kings Buddha Loetla Nabhalai (Rama II) and Nangklao (Rama III) created a semblance of a modern administration by creating a supreme council and appointing chief officers to help with the running of the government.[10]

Mongkut (Rama IV) marked a significant break in tradition when he spent the first 27 years of his adult life as a Buddhist monk during which time he became proficient in the English language, before ascending the throne. As king, he continued the appointment of officers to his supreme council, the most notable being Somdet Chao Phraya Prayurawongse and Si Suriyawongse, both of whom acted as Chief Ministers for King Mongkut (and the latter as regent, from the king's death in 1868 until 1873.)

Chulalongkorn (Rama V) ascended the throne as a minor at age 15 in 1868, and as King of Siam on 16 November 1873. As a prince, he had been tutored in Western traditions by the governess, Anna Leonowens. Intent on reforming the monarchy along Western lines, during his minority he traveled extensively to observe western administrative methods. He transformed the monarchy along Western lines of an "enlightened ruler". He abolished the practice of prostration in front of the monarch, and repealed many laws concerning the relationship between the monarch and his people, while continuing many of the ancient aspects and rituals of the old kingship.[11] In 1874, he created a privy council copied from the European tradition, to help him rule his Kingdom. During his reign Siam was pressured to relinquish control of its old tributaries of Laos and northern Malaya to Western powers, Siam itself narrowly avoided being colonized.[12][13] In 1905, 37 years after his coronation, Chulalongkorn ended slavery with the Slave Abolition Act. In 1867 slaves accounted for one-third of the Siamese population.

His son, Vajiravudh (Rama VI), ascended to the throne in 1910 and continued his father's zeal for reform to bring the monarchy into the 20th century. The perceived slow pace of reform resulted in the Palace Revolt of 1912. In 1914, Vajiravudh determined that the act providing for invoking martial law, first promulgated by his father in 1907, was not consistent with modern laws of war, nor convenient for the preservation of the security of the state, so it was amended to a more modern form that, with minor amendments, continued in force through subsequent changes in government.[14]

Prajadhipok (Rama VII) succeeded his brother in 1925. The Eton and Sandhurst educated monarch created a council similar to a cabinet, where the most important government officials could meet to decide state affairs. This advisory and legislative council, styled the Supreme Council of State of Siam (Thai: อภิรัฐมนตรีสภา) was founded on 28 November 1925 and existed until 1932.

Constitutional monarchy

King Prajadhipok signing the Constitution of Siam, 10 December 1932.

In June 1932, a group of foreign educated students and military men called "the promoters" carried out a bloodless revolution, seized power and demanded that King Prajadhipok grant the people of Siam a constitution. The king agreed and in December 1932 the people were granted a constitution, ending 150 years of absolute Chakri rule. From then on the role of the monarch was relegated to that of a symbolic head of state. His powers from then on were exercised by a prime minister and the national assembly.

In 1935 King Pradhipok (Rama VII) abdicated the throne, following disagreements with the government. He lived in exile in the United Kingdom until his death. The king was replaced by his young nephew Ananda Mahidol (Rama VIII). The new king was 10 years old and was living abroad in Switzerland. A council of regents was appointed in his place. During this period the roles and powers of the king were entirely usurped by the fascist government of Plaek Phibunsongkhram, who changed the name of the kingdom from Siam to Thailand, and aligned it on the side of the Axis powers in the Pacific theatre of World War II. By the end of the war Phibunsongkhram was removed and the young king returned. The Free Thai movement provided resistance to foreign occupation during the war and helped rehabilitate Thailand after the war.

After Rama VIII's sudden death from a bullet wound in 1946, Prince Bhumibol Adulyadej (Rama IX), aged 19 years old, became the new monarch. He was the world's longest reigning monarch at the time of his death in October 2016. King Bhumibol died on October 13, 2016 at the age of 88. Immediately after, the prime minister declared a one-year period of mourning for the country.[15]

The monarchy in the 21st century

Since c. 2000, the role of the Thai monarchy has been increasingly challenged by scholars, media, observers and traditionalists, and as more educated pro-democracy interests began to express their rights to speech. Many deemed that a series of laws and measures relating to lèse majesté in Thailand, aimed at protecting the king and the royal family, are hindrances to freedom of expression. Dozens of arrests, hundreds of criminal investigations and multiple imprisonments have been made based on these laws.[16] King Bhumibol Adulyadej, in his 2005 national birthday broadcast, also indicated that he welcomed criticism.[17]

The lèse-majesté law is part of Thailand’s Criminal Code, which also contains general provisions on defamation and libel of private individuals.

The king is assisted in his work and duties by the Private Secretary to the King of Thailand and the Privy Council of Thailand, in consultation with the head of the cabinet, the Prime Minister. In accordance with the constitution the king is no longer the originator of all laws in the kingdom; that prerogative is entrusted to the National Assembly of Thailand. All bills passed by the legislature, however, require his royal assent to become law. The monarchy's household and finances are managed by the Bureau of the Royal Household and the Crown Property Bureau respectively, these agencies are not considered part of the Thai government and all personnel are appointed by the king.[18]

The junta which took power in 2014 has been aggressive in jailing critics of the monarchy. In 2015, it spent US$540 million, more than the budget of the Ministry of Foreign Affairs, on a promotional campaign called "Worship, protect and uphold the monarchy." The campaign includes television commercials, seminars in schools and prisons, singing contests, and competitions to write stories and films praising the king. "This is not propaganda," Prayut Chan-o-cha, the leader of the junta, said. "The youth must be educated on what the king has done."[19]

In its fiscal year 2016 budget, the ruling military government has increased its expenditure for "upholding, protecting and preserving the monarchy" to 18 billion baht (US$514 million), an increase of 28 percent for this budget line item since 2014 when it took power.[20]

List of kings

Royal regalia

The present set of royal regalia of Thailand (Khrueang Raja Kakudhabhand, Thai: เครื่องราชกกุธภัณฑ์) and the royal utensils was created mostly during the reign of King Rama I and Rama IV, after the previous set was lost during the sack of Ayutthaya by the Burmese in 1767. The regalia is used mainly during the coronation ceremony of the king at the beginning of every reign. The regalia is presently on display in the Museum of the Grand Palace in Bangkok.[21][22]

Coronation of King Bhumibol, Grand Palace, 5 May 1950.

The Thai royal utensils (Phra Khattiya Rajuprapoke; พระขัตติยราชูปโภค) are also for the personal use of the monarch,[22] comprising:

These unique objects are always placed on either side of the king's throne or his seat during royal ceremonies.

Other symbols of kingship

Royal ceremonies

The Royal Barge Procession, 2003.

The king and other members of his family carry out many royal ceremonies per year, some dating from the 13th century.

Royal orders and decorations

The king is sovereign of several Royal Orders and Decorations, the prerogative to appoint and remove any persons from these orders are at the king's discretion. However, sometimes recommendations are made by the Cabinet of Thailand and the Prime Minister.

See also

Monarchs of
the Chakri Dynasty
Phra Phutthayotfa Chulalok
(Rama I)
Phra Phutthaloetla Naphalai
(Rama II)
(Rama III)
(Rama IV)
(Rama V)
(Rama VI)
(Rama VII)
Ananda Mahidol
(Rama VIII)
Bhumibol Adulyadej
(Rama IX)
(Rama X)


  1. Campbell, Charlie (n.d.). "Thais Face an Anxious Waii am very awesome Power". Time. Retrieved 2 December 2016.
  2. The Secretariate of the House of Representatives (Nov 2007). "Constitution of the Kingdom of Thailand B.E 2550" (PDF). The Secretariat of the House of Representatives. Retrieved 7 November 2012.
  3. Cœdès, G. (1921). "The Origins of the Sukhodaya Dynasty" (PDF). Journal of the Siam Society. Siam Heritage Trust. JSS Vol. 14.1b (digital): image 1. Retrieved 17 March 2013. The dynasty which reigned during a part of the XIIIth. and the first half of the XlVth. centuries at Sukhodaya and at Sajjanlaya, on the upper Menam Yom, is the first historical Siamese dynasty. It has a double claim to this title, both because its cradle was precisely in the country designated by foreigners as "Siam" (Khmer: Syain; Chinese : Sien, etc.), and because it is this dynasty which, by freeing the Thai principalities from the Cambodian yoke and by gradually extending its conquests as far as the Malay Peninsula, paved the way for the formation of the Kingdom of Siam properly so called.
  5. Prince Dhani Nivat, Kromamun Bidyadabh (1947). "The Old Siamese conception of the Monarchy" (PDF). Journal of the Siam Society. Siamese Heritage Trust. JSS Vol. 36.2b (digital): image 10 page 93. Retrieved 7 March 2013. Patriarchal Sukhothai Kingship ...The monarch was of course the people's leader in battle; but he was also in peace-time their father whose advice was sought and expected in all matters and whose judgment was accepted by all. He was moreover accessible to his people, for we are told by an old inscription that, in front of the royal palace of Sukhothai there used to be a gong hung up for people to go and beat upon whenever they wanted personal help and redress. The custom survived with slight modifications all through the centuries down to the change of regime in 1932....
  6. Terwiel, Barend Jan (1983). "Ahom and the Study of Early Thai Society" (PDF). Journal of the Siam Society. Siamese Heritage Trust. JSS Vol. 71.0 (PDF): image 4. Retrieved 7 March 2013. In older usage, khun was used for a ruler of a fortified town and its surrounding villages, together called a mueang; with the prefix pho (พ่อ "father") appears as Pho Khun.
  7. Griswold, A.B.; Prasert na Nagara (1969). "A Law Promulgated by the King of Ayudhya in 1397 A.D. Epigraphic and Historical Studies, No. 4" (PDF). Journal of the Siam Society. Siam Heritage Trust. JSS Vol. 57.1 (digital): image 3. Retrieved 17 March 2013. It was customary for Southeast Asian kings, who were of course the absolute proprietors of the land, to allot the usufruct of portions of it to their subjects. The kings of Ayudhya allotted a specified number of sakti-na or 'dignity-marks' to each of their subjects according to his rank and the position he occupied, corresponding to the number of rai he was actually or theoretically entitled to; and when the system was fully developed the number of marks ranged from 5 to 25 for ordinary citizens, up to 10,000 for ministers in charge of important departments, and 20,000 for princes of the highest rank.
  8. "Royal Words". Internet resource for the Thai language. 9 October 2013. Retrieved 4 October 2013.
  9. Lingat, R. (1950). "Evolution of the Conception of Law in Burma and Siam" (PDF). Journal of the Siam Society. Siam Heritage Trust. JSS Vol. 38.1c (digital). Retrieved 17 March 2013. Kings and rajas are only responsible for keeping peace and order. It is a very noticeable thing that in so rich a language as Sanskrit there exists no proper word to translate our word law as meaning positive law. It is true Hindus have the word darma, which is sometimes wrongfully translated by the word law, but actually is quite a different thing....
  10. Roberts, Edmund (12 October 2007) [First published in 1837]. "Chapter XIX―titles of the king". Embassy to the Eastern courts of Cochin-China, Siam, and Muscat : in the U. S. sloop-of-war Peacock ... during the years 1832-3-4. Harper & brothers. p. 302. Retrieved 28 January 2013. At the head of the Siamese administration is the supreme council, consisting of the following officers:....
  11. Wales, H. G. Quaritch (14 April 2005) [First published in 1931]. "Chapter IV, the kingship". Siamese state ceremonies (digital ed.). London: Bernard Quaritch. p. 32. Retrieved 25 April 2012. we find the only certain relic of the cult of the Royal God in the symbolism of the Coronation Ceremony by which the Brahman priests call down the spirits of Visnu and Siva to animate the new king....
  12. Stuart-Fox, Martin (1994). "Conflicting conceptions of the state: Siam, France and Vietnam in the late nineteenth century" (free). Journal of the Siam Society. Siam Heritage Trust. JSS Vol. 82.0 (digital). Retrieved 12 April 2013. Historians of Southeast Asia often face problems in using terms drawn from and applicable to European polities and societies to refer to non-European equivalents that do not conform to European models.
  13. Meyers, Dean (1994). "Siam under siege (1893-1902): modern Thailand's decisive decade, from the Paknam incident to the first flowering of the Chakri reformation" (PDF). Journal of the Siam Society. Siam Heritage Trust. JSS Vol. 082.0k (digital): image. Retrieved 17 March 2013.
  14. Pakorn Nilprapunt (2006). "Martial Law, B.E. 2457 (1914) — unofficial translation" (PDF). Office of the Council of State. Retrieved 21 May 2014. Reference to Thai legislation in any jurisdiction shall be to the Thai version only. This translation has been made so as to establish correct understanding about this Act to the foreigners.
  15. "Thai King Bhumibol Adulyadej dies at 88". CNN. Retrieved 13 October 2016.
  16. "Running Afoul of the Thai Monarchy". The New York Times. Retrieved 22 September 2015.
  17. "Royal Birthday Address: 'King Can Do Wrong'". The Nation. 5 December 2005. Archived from the original on 2012-12-25. Retrieved 26 November 2016.
  18. "Thailand The King – Flags, Maps, Economy, History, Climate, Natural Resources, Current Issues, International Agreements, Population, Social Statistics, Political System". 28 December 1972. Retrieved 5 May 2012.
  19. Fuller, Thomas (2015-09-20). "With King in Declining Health, Future of Monarchy in Thailand Is Uncertain". The New York Times. Retrieved 22 September 2015.
  20. "For Thailand, a portrait is crucial to preparations for succession". Straits Times. 2016-04-21. Retrieved 27 April 2016.
  21. "Internet Archive Wayback Machine". 27 October 2009. Archived from the original on 27 October 2009. Retrieved 5 May 2012.
  22. 1 2 Thai Government Public Relations: Royal Regalia + Royal Utensils.
  24. "Kingdom of Thailand celebrates Wan Chatramongkhol (Coronation Day) May 5". Pattaya Mail. Retrieved 5 May 2012.


  • The Constitution of the Kingdom of Thailand (2007), s:2007 Constitution of Thailand
  • Aryan, Gothan (15 – 16 September 2004), Thai Monarchy, International Institute for Democracy and Electoral Assistance, Retrieved on 5 July 2006, presented in Kathmandu, Nepal
  • Kullada Kesboonchoo Mead, The Rise and Decline of Thai Absolutism, RoutledgeCurzon 2004

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