List of Thai monarchs

King of Thailand
พระมหากษัตริย์ไทย
Royal Standard (since 1910)
Incumbent
Vajiralongkorn (Rama X) since 13 October 2016
Details
Style	His Majesty
Heir presumptive	Dipangkorn Rasmijoti
First monarch	Si Inthrathit
Formation	1238;788 years ago (1238) (contemporary) 757;1269 years ago (757) (traditional)
Residence	Grand Palace (ceremonial) Dusit Palace (residential)
Website	royaloffice.th

The modern order of succession of Thai monarchs begins with king Si Inthrathit who established the Sukhothai Kingdom in 1238, which is considered to be the first contemporary Tai-ethnic kingdom; it was ruled by Phra Ruang dynasty. Composing of 8 dynasties: Phra Ruang, Uthong, Suphannaphum, Sukhothai, Prasat Thong, Ban Phlu Luang, Thonburi, and Chakri. With brief interruptions, 55 monarchs and 27 viceroys have ruled over four successive kingdoms, the current monarch being Vajiralongkorn (Rama X) of the Chakri dynasty.

The modern perception is that there has been four distinct eras of Thai history, namely: Sukhothai, Ayutthaya, Thonburi, and Rattanakosin. However, the compilations of historical narratives from the old capital (pongsawadan krung kao) and the historical narratives from the king in the temple compiled by Prince Tisavarakumara, the Prince Damrong Rajanubhab, along with the Chronicles of Northern Kingdom's Histories included the Pre-Sukhothai and Pre-Ayutthaya monarchs as well. ^[1] This means that the Sukhothai-Si Satchanalai city-states and the Siam Confederation and their monarchs is a part of the historical cannon as well.

Prior to the establishment of Sukhothai, Siam was a group of petty kingdoms shifting zones of influences and mandalas through wars and political marriages. Because of this, there are kingdoms and polities which existence may overlap, hence the monarchs' reigns will also overlap or even reign two polities at once. An example are Sukhothai and Ayutthaya. Ayutthaya, in the modern sense, was established during the reign of Maha Thammaracha I of Sukhothai in 1351 in which king Uthong V & Ramathibodi I (same person with two regnal names) inherited all of the confederation's polities – uniting them, hence the reign of Ayutthaya's monarchs overlaps with 4 monarchs of Sukhothai. An example for a monarch reigning multiple polities is when king Phanom Thale Sri who reigned both the Siam Confederation and the Sukhothai-Si Satchanai city-states (together 5 different polities) at the same time in 1155, while these polities were ran seperately and equal to one another unlike the vassalage system in which a state is subservient to another.

The traditional accounts of the list starts with king Phra Pathomsuriya Thephanarathai Suwannabophit as the first king of all of Siam in 757 CE. He was the first king to unite petty kingdoms under one monarch. His descendants are of the Guruwamsa/Pathomsuriyawong dynasty which is also the ancestors to most of the reigning dynasty of Sukhothai and Ayutthaya. In which, according to the traditional accounts, king Uthong V, the first king of Ayutthaya is cannonically considered to be the 27th monarch of Siam. The number of monarchs up to today would total to 97 monarchs.

Titles and naming conventions

Further information: Thai royal ranks and titles

In the Sukhothai Kingdom, the monarch used the title Khun (Thai : ขุน) or Phaya (Thai : พญา), while Pho Khun/ Phaya (Thai : พ่อขุน/ พ่อพญา) or Phoo Khun/ Phaya (Thai : ปู่ขุน/ ปู่พญา) were used to refer to deceased monarchs or senior relatives who were monarchs. ^[2] The monarch also adopted the Khmer prestige title Kamrateng An (Thai : กมฺรเตงฺ อญฺ), meaning "our lord", as regnal title. ^[3]

In the Ayutthaya Kingdom and afterward, thanandon , the system of Thai royal titles, determines the style of the monarch's full regnal name (which includes the title), consisting of two interconnected parts:

• The first part is the title Phra Bat Somdet Phra Chao Yu Hua (Thai : พระบาทสมเด็จพระเจ้าอยู่หัว, 'His Majesty the King'). The title is split by the regnal name, written between Phra and Chao. If the monarch was not formally crowned, Phra Bat is omitted. If the monarch ruled as a tributary or was usurped, Somdet may be omitted.
  • Sometimes, Chao Yu Hua is fully omitted. Other times, only Yu Hua is omitted, in which case Chao follows the remaining components of the title and precedes the regnal name.
• The second part is the regnal name, of which only a portion may be used to commonly refer to the monarch. It may differ from their birth name, their name as uparaja (viceroy), or their posthumous name and/or historical style. This list refers to monarchs by the names most often used by traditional historians. ^[4]

Western nations referred to the monarch as the "King of Siam" (Latin : Rex Siamensium), regardless of Thai titles, since the initiation of relations in the 16th century. Mongkut (Rama IV) was the first monarch to adopt the title when the name Siam was first used in an international treaty. ^[5] When the kingdom's name was changed to Thailand, the monarch's Western title changed accordingly. ^[6]

Regarding relations between dynasties

Due to intermarriages between Siamese polities, dynasties are usually branches or cadet branches of an already existing house. A dynasty may also arise from a minor member of a house through the right of conquest.

Dynasties which is the progenitor of other dynasties

Pathomsuriyawong Dynasty (700-1351) - the line of Phra Pathomsuriya Thephanarathai Suwannabophit (b.742; d.800)

Aphaikhamini Dynasty (957–c.1100s) - the line of Phraya Aphaikhamini (d.959)

Dynasties related to the Pathomsuriyawong

Phra Ruang Dynasty (1238–1438; 1468–1474) - the line of Inthrabodinthrathit (b.1188; d.1270) elder son of Sri Singha ofPathomsuriyawong. Inthrabodinthrathit overthrew Thao Saen Pom king of Suphannaphum who was reigning Sukhothai-Si Satchanalai at the time thus establishing the Sukhothai Kingdom. Came to power using the right of conquest.

• 2nd Suphannaphum Dynasty (1409–1569) - the line of Nakhon Intharachathirat (b.1359; d.1424) mother from Loe Thai ofPhra Ruang Dynasty, he is the son of Borommarachathirat I. Nakhon Intharachathirat, king of the constituent kingdom of Suphannaphum overthrew king Ramrachathirat. Came to power using the right of conquest.

• Sukhothai Dynasty (1569–1629) - the line of Sanphet I (b.1509; d.1590) known relation to Phra Ruang Dynasty but unknown exact relation. Sanphet I, Marquess of Phitsanulok was installed by the Burmese emperor Bayinnaung as a vassal king. Came to power using the right of vassalage.
  • Prasat Thong Dynasty (1629–1688) - the line of Sanphet V (b.1599; d.1655) as son of Sanphet III or maternal-cousin of Borommaracha I, both of Sukhothai Dynasty. Sanphet V , Defence Minister and Marquess Prime Minister of Ayutthaya overthrew king Athittayawong.Came to power using the right of conquest.
    • Ban Phlu Luang Dynasty (1688–1767) - the line of Sanphet VIII (b.1661; d.1709) from Ramathibodi III (b.1632; d.1688) son of Sanphet V of Prasat Thong Dynasty. King Phetracha , Elephant Corps Minister and General of the Ayutthaya Army overthrew king Ramathibodi III . He later passed on the throne to his adoptive son Sanphet VIII. Came to power using the right of conquest.
  • Chakri Dynasty (1782–present) - the line of Rama I (b.1737; d.1809) from Duke Kosa Pan (b.1633; d.1699) grandson of Sanphet III (b.1557; d.1610) of Sukhothai Dynasty. Rama I, former Count of Ratburi, Grand Duke Prime Minister of Thonburi overthrew king Sanphet X. Came to power using the right of conquest.

Uthong Dynasty (1351–1370) - the line of Uthong V & Ramathibodi I (b.1314; d.1369) mother is from Anuracha (b.1112; d.1167) younger son of Sri Singha ofPathomsuriyawong. Uthong V & Ramathibodi I had inherited all of the Dvaravati polities by 1351. His title is Uthong V of Suphannaphum and Phripphri and Ramathibodi I of Ayothaya and Lavo. Came to power using the right of inhertiance.

Dynasties related to the Aphaikhamini

Uthong Dynasty (1351–1370) - the line of Uthong V & Ramathibodi I (b.1314; d.1369) father is Borommaracha (d.1344) son of Thammatrilok ofAphaikhamini

Dynasties not related to others

Thonburi Dynasty (1767–1782) - the line of Sanphet X (b.1734; d.1782). Marquess of Tak reunited the kingdom after the disintegration of the kingom of Ayutthaya into 5 different kingdoms. Came to power using the right of conquest.

1st Suphannaphum Dynasty (1370–1388) - the line of Borommarachathirat I (b.1310; d.1388) father is Uthong IIIofSuphannaphum. Borommarachathirat I , king of the constituent kingdom of Suphannaphum overthrew king Ramesuan. Came to power using the right of conquest.

Regarding the relationship between kings and viceroys

In Siam, the relationship between the king and the viceroy (called the Uparaja) was based on shared rule but clear hierarchy. The king was the highest ruler, while the viceroy was usually a close relative chosen to help govern and serve as the likely successor, though this would often prove false due to other member of the family starting a succession war. The viceroy had real authority, controlling parts of the kingdom and managing government and military affairs when needed. However, all power officially came from the king, and the viceroy was expected to support and follow the monarch’s decisions. Because the viceroy had his own court and influence, this system sometimes led to rivalry or competition between the two. The position continued for many centuries until King Chulalongkorn abolished it in the late 19th century to centralize power under the monarchy. While the viceroy is not the king, throughout the history of Siam, there were moments where these viceroys were crowned "in equal power" as the monarch, like the coronation of Rama IV and Pinklao.

Sukhothai-Si Satchanalai city-state (679–1238)

Further information: Sukhothai Kingdom, Mueang Chaliang, and Asadvarapura Kingdom (Xiū Luó Fēn)

Intharachaithirat dynasty (679–687)

No.	Portrait	Regnal name	Personal name	Reign	Succession	Notes
1		Inthrachaithirat [7] อินทราไชยธิราช		679 – 687	First king of a Sukhothai polity	Overthrown by Phalithirat

Lavo dynasty (687–c.700s)

No.	Portrait	Regnal name	Personal name	Reign	Succession	Notes
2		Phalithirat [8] พาลีธิราช		687 – c.700s	Usurper Overthrew Inthrachaithirat	Son of Kalavarnadisharaja Kalavarnadisharaja , the first King of Lavo
Dvaravati suzerainty era the city was abandoned

Sai Nam Pueng of Phraek Si Racha dynasty (c.930s–957)

No.	Portrait	Regnal name	Personal name	Reign	Succession	Notes
3		Phra Chao Suthammaracha พระเจ้าสุธรรมราชา		c.930s – 957	Son of Sai Nam Phueng I	Reigned from Phitsanulok Also King of Phraek Si Racha

Aphaikhamini dynasty (957–c.1100s)

No.	Portrait	Regnal name	Personal name	Reign	Succession	Notes
Haripunchai suzerainty era abandoned until 957
4		Phraya Aphaikhamini [9] พระยาอภัยคามินี		957 – 959	Refounded a Sukhothai polity	A Mon noble who fled Haripunchai
5		Phraya Sri Chanthrathibodi [9] พระยาศรีจันทราธิบดี		959 – c.900s	Offered the throne (not related)	A Lavo commoner Fled Phraek Si Racha polity becuase Phra Chao Sinthop Amarin had ordered his arrest to become a monk.
As the free city-state of Si Satchanalai–Sukhodaya
6		Somdet Phra Arunarat [10] สมเด็จพระอรุณราช	Chao Anuratcha Kuman เจ้าอรุณราชกุมาร	c.1000s – 1052	A son of Aphaikhamini Offered the throne
7		Chao Suphatcharat เจ้าพัตตาสุจราช	Chao Pasuja Kuman เจ้าพสุจกุมาร	1052 – c.1000s	Son of Arunarat
8		Phra Chao Thammatrailok พระเจ้าธรรมไตรโลก		c.1100s	Son of the Suphatcharat	Father of Ayothaya kings, Thammaracha and Borommaracha Father-in-law of Kesariraja Grandfather of Uthong V of Ayutthaya
9		Chao Rachathirat เจ้าราชาธิราช		c.1100s	Son of the Thammatrailok
City-state is partitioned into Sukhothai and Si Satchanalai, after this the city was ruled from Si-Satchanalai

Pathomsuriyawong/Guruwamsa dynasty (1155–1219)

No.	Portrait	Regnal name	Personal name	Reign	Succession	Notes
Indaprasthanagara suzerainty era (Phraek Si Racha Polity)
10		Phra Phanom Thale Sri พระพนมทะเลศรี or Mahesavasatithrathiratchakasat มเหศวสติทราธิราชกษัตริย์	Intharacha อินทราชา	1155 – 1157	Phra Pathomsuriya Thephanarathai Suwannabophit lineage Grandson of Sri Singha Conquered Sukhothai	Also King of Lavo (1150–1155), King of Singburi (1169–1188), and King of Phrip Phri (1188–1225) Traditionally considered the 23rd king of Siam. Descended from the a son of Sri Singha, Anuracha
11		Phra Chao Suriyaracha พระเจ้าสุริยราชา		1157 – 1184	Cousin of Phanom Thale Sri	Also king of Kamphaeng Phet Descended from the a son of Sri Singha, Suriyawong
De facto independent
12		Phra Chao Chantharacha พระเจ้าจันทราชา	Phra Chantha Kuman พระจันทกุมาร	1184 – 1214	Son of the Suriyaracha	Stopped sending tribute to Khmer Empire Father of Kamrateng An Sri Inthrabodinthrathit, first independent king of Sukhothai
13		E Daeng Phloeng อีแดงเพลิง		1214 – 1219	Usurper (not related)	Possibly a Mon, name found in the Wat Si Chum Inscription

Sri Naw Nam Thum dynasty (1219–1238)

No.	Portrait	Regnal name	Personal name	Reign	Succession	Notes
remerged as city-state of Si Satchanalai–Sukhodaya
14		Pho Khun Sri Naw Nam Thum พ่อขุนศรีนาวนำถุม		1219 – c.1200s	Usurper, Noble of Chaliang Overthrew E Daeng Phloeng	Noble from Si Satchanalai overthrowing E Daeng Phloeng, also a possible king of Sri Satchanalai
15		Khom Sabat Khlon Lamphong ขอมสบาดโขลญลำพง	Thao Saen Pom ท้าวแสนปม	c.1200s	Usurper	Also king of Suphannaphum Grandfather-in-law to Uthong V Grandfather to Borommarachathirat I
16		Pho Khun Pha Muang พ่อขุนผาเมือง		c.1200s – 1238	Son of Sri Naw Nam Thum Overthrew Khom Sabat Khlon Lamphong	Friend and ally of Inthrabodinthrathit Brother-in-law of Inthrabodinthrathit

Sukhothai Kingdom (1238–1438)

Further information: Sukhothai Kingdom, Mueang Chaliang, and Asadvarapura Kingdom (Xiū Luó Fēn)

Tai peoples migrated into mainland Southeast Asia in the 8th–10th centuries. ^[11] In the years after, Northern Thai groups established mueang that evolved into larger states, such as Ngoenyang. ^{[12] [13]} However, it was not until the decline of the Khmer Empire in the 13th century that a Central Thai kingdom politically and culturally related to modern Thailand was first founded.

Phra Ruang dynasty (1238–1438; 1468–1474)

The Phra Ruang dynasty was the only royal lineage that ruled over the Sukhothai Kingdom, the first Central Thai state. Established by Si Inthrathit in 1238, who declared independence from the Khmer Empire, the dynasty laid the foundations for Thai society. ^[14] Under Ram Khamhaeng the Great, the initial Thai script was invented and Theravāda Buddhism was established as the state religion. ^{[15] : 197  [16] : 25}

The dynasty is named after the Traiphum Phra Ruang, a Buddhist cosmology book written by Maha Thammaracha I. During his reign, the kingdom was invaded by Ayutthaya, a neighboring Thai state, becoming a tributary during the reign of Maha Thammaracha II. ^{[15] : 222}

In the Sukhothai Kingdom, the monarch ruled from the city of Sukhothai, while the heir presumptive would occasionally be named uparaja, or viceroy, and ruled in Si Satchanalai. In 1438, Ayutthaya annexed Sukhothai at the death of Maha Thammaracha IV when Borommarachathirat II of Ayutthaya named his son Prince Ramesuan uparaja. In Ayutthaya, the tradition would evolve into the Front Palace system. ^[17]

No.	Portrait	Regnal name	Personal name	Reign	Succession	Life details	Viceroy
1		Kamrateng An Sri Inthrabodinthrathit กมรเตงอัญศรีอินทรบดินทราทิตย์	Pho Khun Si Inthrathit พ่อขุนศรีอินทราทิตย์ or Khun Bang Klang Hao ขุนบางกลางหาว	1238 – 1270 (32 years)	First King of Sukhothai Son of Chantharacha Descendant of Phra Pathomsuriya Thephanarathai Suwannabophit Founded a new Dynasty	1188 – 1270 (aged 82) Ruled locally in the Khmer Empire as Bang Klang Hao. His rebellion led to the establishment of Sukhothai, the first Central Thai kingdom [18] Originally of Pathomsuriyawong Dynasty	Vacant
2		Khun Ban Mueang ขุนบานเมือง		1270 – 1279 (9 years)	Son of Si Inthrathit	c. 1237 – 1279 (aged approx. 42) Namesake for birth name of Maha Thammaracha IV [19]	Ram (brother)
3		Phrabat Kamrateng An Sri Rammarat พระบาทกมรเตงอัญศรีรามราช	Pho Khun Ram Khamhaeng the Great พ่อขุนรามคำแหงมหาราช	1279 – 1298 (19 years)	Son of Si Inthrathit	c. 1237/1247 – 1298 (aged approx. 51/61) Oversaw the height of Sukhothai prosperity, the development of the Thai script, and the propagation of Theravada Buddhism within Sukhothai [15]	Vacant
—		Phaya Sai Songkhram พญาไสสงคราม		1298	Son of Ram Khamhaeng	late c.1200s – unknown (aged approx. 51/61) Reigned as regent until Loe Thai ascended
4		Phraya Loe Thai พระยาเลอไทย		1298 – 1323 (25 years)	Son of Ram Khamhaeng	c. 1262 – 1323 (aged approx. 61) Brother of Burmese queen consort May Hnin Thwe-Da. [20] His reign saw the decline of Sukhothai, as regions conquered by Ram Khamhaeng broke away	Li Thai (son)
5		Phraya Ngua Nam Thum พระยางั่วนำถุม		1323 – 1347 (24 years)	Son of Ban Mueang	c. 1266 – 1347 (aged approx. 81) Brother of Burmese queen consort May Hnin Htapi. [21] Origin of his name is disputed [22]	Li Thai (nephew)
—		name unknown		1347	Son of Ngua Nam Thum	(late c.1200s to c.1300s) – c.1347(aged approx. unknown) Crowned after Ngua Nam Thum, then Li Thai, then lord of Si Satchanalai and viceroy, marched his army and overthrown a son of Ngua Nam Thum in a coup where "he killed all his enemies". [23]	Vacant
6		Phrabat Kamrateng An Sri Suriyaphong Ram Maha Thammarachathirat พระบาทกมรเตงอัญศรีสุริยพงษ์รามมหาธรรมราชาธิราช and Phra Maha Thammaracha I พระมหาธรรมราชาที่ ๑	Phraya Li Thai พระยาลิไทย and Luethai [24] ฦๅไทย	1347 – 1368 (21 years)	Son of Loe Thai Overthrew son of Ngua Nam Thum	c. 1300 – 1368 (aged approx. 68) Known for his devotion to Buddhist philosophy and writing. [25] During his reign, Ayutthaya began to invade into Sukhothai [15]
1378: Sukhothai became a tributary state of the Ayutthaya Kingdom
7		Phra Maha Thammaracha II พระมหาธรรมราชาที่ ๒	Phraya Lue Thai พระยาลือไทย	1368 – c. 1400 (approx. 32 years)	Son of Maha Thammaracha I	c. 1358 – 1400 (aged approx. 42) Born Lue Thai. Under his rule, the dynasty continued under tributary status [15]	Vacant
8		Phra Maha Thammaracha III พระมหาธรรมราชาที่ ๓	Phraya Sai Lue Thai พระยาไสลือไทย	c. 1400 – 1419 (approx. 19 years)	Son of Maha Thammaracha II	c. 1380 – 1419 (aged approx. 39) Born Sai Lue Thai
9		Phra Maha Thammaracha IV พระมหาธรรมราชาที่ ๔	Phraya Borommapan พระยาบรมปาล	1419 – 1438 (19 years)	Son of Maha Thammaracha III Succession War	c. 1401 – 1438 (aged approx. 37) Born Borommapan. Won the throne against his brother after the intervention of King Intharachathirat of Ayutthaya. [26] Upon his death, King Borommarachathirat II of Ayutthaya installed his son as uparaja, ending the Phra Ruang succession [17]
1438: De facto annexation into Ayutthaya, ending Sukhothai autonomy
—		Phraya Yutthisathian พระยายุทธิษเฐียร		1468 – 1474 (6 years)	Son of Maha Thammaracha IV	c.1420s – c.1480s (mentioned)(aged approx. 60) Was to be appointed the viceroy under Borommatrailokkanat, instead was appointed Phraya Songkhwae (Phitsanulok). Sometime later, he was appointed viceroy of Sukhothai. Removed as viceroy, stripped of all titles and lands	Vacant
1529: De jure annexation into Ayutthaya, as the position of Viceroy (Uparat) of Sukhothai was now defunct

Suphannaphum dynasty (1438–1468; 1474–1529)

No.	Portrait	Regnal name	Personal name	Reign	Succession	Life details	Viceroy
—		Somdet Phra Borommatrailokkanat สมเด็จพระบรมไตรโลกนาถ	Phra Ramesuan (II) พระราเมศวร (ที่๒)	1438 – 1468 (30 years)	Grandson of Maha Thammaracha II Son of Borommarachathirat II	1431 – 1488 (aged approx. 57) Installed by Borommarachathirat II as viceroy of Sukhothai, tying Sukhothai in a personal union after becoming king of Ayutthaya.	Vacant
				1474 – 1485 (11 years)		Second reign due to the removal of Yutthisathian
—		Somdet Phra Ramathibodi II สมเด็จพระรามาธิบดีที่ ๒	Phra Chetthathirat พระเชษฐาธิราช	1485 – 1529 (44 years)	Great-Grandson of Maha Thammaracha II Son of Borommatrailokkanat	1472 – 1529 (aged approx. 57) Installed by Borommatrailokkanat as viceroy of Sukhothai	Vacant
1529: De jure annexation into Ayutthaya, as the position of Viceroy (Uparat) of Sukhothai was now defunct

Siamese Confederation (700–1351)

Further information: Siam Confederation (Xiān), Lavo Kingdom, Suphannabhum, Phrip Phri, Nakhon Si Thammarat Kingdom, and Syamapura Kingdom (Qiān Zhī Fú)

1st Pathomsuriyawong/Guruwamsa dynasty (700–c.800s)

No.	Portrait	Regnal name	Personal name	Reign	Succession	Notes
Founding of Phraek Si Racha
1		Komerat โกเมราช		700 – c.700s	Founded Phraek Si Racha polity
2		Ketumala เกตุมาลา		c.700s – 757	Son of Komerat	concurrent with king Phalitbodichai of Lavo
3		Phra Pathomsuriya Thephanarathai Suwannabophit พระปฐมสุริยเทพนรไทยสุวรรณบพิตร or Somdet Phra Pathom Suriya Narani Saworabophit สมเด็จพระปฐมสุริยนาราณีศวรบพิตร		757 – 800	Adopted Son of Ketumala	Canonically the first king of all Siam, the ancestor to both Sukhothai and Ayutthaya monarchs. King of all Dvaravati polity: Nakhon Pathom, Si Thep, Phraek Si Racha, and Lopburi. Recorded name: Pra Poat honne Sourittep pennaratui sonanne bopitra
4		Pathum Kuman ปทุมกุมาร		800 – c.800s	Son of Pathomsuriya	concurrent with king Sikarat of Kamlanka
Fell under Si Thep c.800s - 859

Athitayarat dynasty (c.800s–859)

No.	Portrait	Regnal name	Personal name	Reign	Succession	Notes
5		Athitayarat อาทิตยราช		c.800s – 859	Usurper	Also king of Syamapura (Sithep) Obtained the emerald buddha into Siamese hands concurrent with king Sikarat of Kamlanka concurrent with king Kamsa of Kamlanka concurrent with king Padum Kumara of Phraek Si Racha

Pharattakap dynasty (859–892)

No.	Portrait	Regnal name	Personal name	Reign	Succession	Notes
6		Phra ChaoPharattakap พระเจ้าภะรัตกับ		859 – 892	Usurper	concurrent with king Vasuthep of Lavo concurrent with king Balarat of Kamlanka concurrent with king Bhagadatta of Si Thep

Sai Nam Pueng of Phraek Si Racha dynasty (892–957)

No.	Portrait	Regnal name	Personal name	Reign	Succession	Notes
7		Phra Chao Sai Nam Phueng I พระเจ้าสายน้ำผึ้งที่ ๑		892 – 922	Usurper	Former noble in the court of the previous concurrent with king Balarat of Kamlanka concurrent with king Uchitthaka of Lavo concurrent with Sri Suntharaprakrom of Si Thep
8		Phra Chao Suthammaracha พระเจ้าสุธรรมราชา		922 – 957	Son of Sai Nam Phueng I	concurrent with Si Suntharavoraman of Si Thep concurrent with Narupati Singhavoraman of Si Thep
Polity splits into two branches: Phraek Si Racha and Phitsanulok

Sunthop Amarin dynasty (937–996)

No.	Portrait	Regnal name	Personal name	Reign	Succession	Notes
9		Phra Chao Sinthop Amarin พระเจ้าสินธพอมรินทร์	Phraya Kraek พญาแกรก	937 – 996 concurent withthe former	Usurper	Unified Phraek Sri Racha and Ayothaya-Lopburi

2nd Pathomsuriyawong/Guruwamsa dynasty (957–1132)

No.	Portrait	Regnal name	Personal name	Reign	Succession	Notes
10		Phra Chao Wisanuracha พระเจ้าวิษณุราชา		957 – 987	Phra Pathomsuriya Thephanarathai Suwannabophit lineage (Exact relation unknown)	Phitsanulok line. King of a Dvaravati polity: Phitsanulok. Incursions by the Khmer empire, prompted the polity to lose influence around Lopburi and Phraek Si Racha concurrent with Sunthorathet of Phraek and Lavo concurrent with Pansa of Suphannaphum
11		Phaya Sunthorathet Mahathepharat พญาสุนทรเทศมหาเทพราช		996 –1005 concurent withthe former and latter	Phra Pathomsuriya Thephanarathai Suwannabophit lineage (Exact relation unknown)	Phraek Si Racha line Canonically the 11th king of all Siam. King of two Dvaravati polity: Lopburi and Phraek Si Racha. Recorded name: Ipoia Sanne Thora Thesma Teperat End of his line concurrent with Wisanuracha of Phitsanulok
12		Phra Chao Pichairacha พระเจ้าพิไชยราชา		987 – 1027	Younger Brother of Wisanuracha	great-great-great grandfather of Si Intharathit great-great grandfather of Uthong II concurrent with Pansa of Suphannaphum concurrent with Rampandit of Suphannaphum
13		Phra Chao Sri Singha พระเจ้าศรีสิงห์		1027 – 1062	Son of Pichairacha	concurrent with Ang Indra of Suphannaphum concurrent with Chantharachot of Lavo
Civil war in the Chao Phraya basin
14		Phra Chao Surintharacha พระเจ้าสุรินทราชา		1062 – 1100	Son of Sri Singha	concurrent with all 8 monarchs of Jayasimhapuri concurrent with Kar Tayy of Suphannaphum concurrent with Narai of Lavo
Lavo and Ayothaya splits off
15		Phra Chao Suriyawong พระเจ้าพระสุริยวงศ์		1100 – 1132	Younger Brother of Suriyawong	concurrent with Sri Thammasokarat I of Nakhon Si Thammarat and Phraek Si Racha concurrent with Kesariracha of Lavo
Phraek Si Racha splits, Chai Nat line continues through the first son of Sri Singha, Surintharacha. Sing buri line continues to the second son, Anuracha. (Chai Nat line later ruling Ayutthaya, and Singburi line later ruling Sukhothai) Pathom Suriyawong dynasty lost control until Uthong II regained control of the region.

Ramanwamsa dynasty (1082–1087)

No.	Portrait	Regnal name	Personal name	Reign	Succession	Notes
Incursions from Haripunchai
16		Phra Chantharachot พระจันทรโชติ		1052–1069 concurent withthe former	Usurper Son of Chanthrathewarat of Suphannaphum	Originally a Suphannaphum prince, his older brother ruled Haripunchai, and then usurped the Lavo throne, enthroning Chandrachota concurrent with Ang Indra of Suphannaphum concurrent with Sri Singha of Phraek Si Racha
17		Phra Narai พระนารายณ์		1069 – 1087 concurent withthe former	Son of Chandrachota of Lavo	Founded modern Ayutthaya city and king of Lavo concurrent with Kar Tayy of Suphannaphum concurrent with Surintharacha of Phraek Si Racha
War of the nine Ayothaya clans
vacant 1087-1089

Luang dynasty (1089–1111)

No.	Portrait	Regnal name	Personal name	Reign	Succession	Notes
War of the nine Ayothaya clans
18		Phra Chao Luang พระเจ้าหลวง		1089 – 1111	Usurper	concurrent with Suriyawang of Phraek Si Racha

Sai Nam Pueng of Ayothaya dynasty (1111–1205)

No.	Portrait	Regnal name	Personal name	Reign	Succession	Notes
19		Phra Chao Sai Nam Peung II พระเจ้าสายน้ำผึ้งที่ ๒		1111 – 1165	Offered the throne	Commoner concurrent with Sri Thammasokarat II of Nakhon Si Thammarat, Praek Sri Racha and Lavo concurrent with Phanom Thale Sri of Siam
20		Phra Chao Thammikkaracha พระเจ้าธรรมิกราชา		1165 – 1205	Son of Sai Nam Peung	Full regnal name according to the Miscellaneous Laws (Phra Aiyakan Betset) under the parent law, Three Seals Law , enacted in 1225 AD (BE 1768): Phrabat Somdet Phra Ramathibodi Sriwisutthiburusodom Borommachakkraphat Thammikaraja Dechochaithepadithep Triphuwanathibet Barombophit Phra Phutthi Chao Yu Hua (Thai: พระบาทสมเดจ์พระรามาธิบดีศรีวิสุทธิบุรุโสดมบรมจักรพรรดิธรรมิกกราชเดโชไชเทพาดิเทพตรีภูวนาธิเบศ บรมบพิตรพระพุทธิเจ้าอยู่หัว) concurrent with Phanom Thale Sri of Siam concurrent with Uthong I of Suphannaphum

3rd Pathomsuriyawong/Guruwamsa dynasty (1132–1167)

No.	Portrait	Regnal name	Personal name	Reign	Succession	Notes
21		Phra Chao Lop Mahasombat พระเจ้าโลภมหาสมบัติ (posthumous)	Phra Chao Anuracha พระเจ้าอนุราชา	1132– 1167 concurent withthe former	Phra Pathomsuriya Thephanarathai Suwannabophit lineage Son of Sri Singha Overthrew Suriyawong (brother)	Overthrew Suriyawong, moved capital from Chai Nat to Singburi concurrent with Sai Nam Peung II of Ayothaya

Pathummawong dynasty (1167–1180)

No.	Portrait	Regnal name	Personal name	Reign	Succession	Notes
22		Sri Thammasokarat II ศรีธรรมโศกราชที่ ๒ or Chantharaphanu I จันทรภาณุที่ ๑	Phaya Narabodi พญานรบดี	1167 – 1180	Usurper	Line of Nakhon si Thammarat kings Got removed from the Chao Phraya Basin area, and continued ruling the Kra Isthmus concurrent with Sai Nam Peung II of Ayothaya concurrent with Phanom Thale Sri of Siam

4th Pathomsuriyawong/Guruwamsa dynasty (1180–1351)

No.	Portrait	Regnal name	Personal name	Reign	Succession	Notes
The confederation is consolidated under Phra Phanom Thale Sri
23		Phra Phanom Thale Sri พระพนมทะเลศรี or Mahesavasatithrathiratchakasat มเหศวสติทราธิราชกษัตริย์	Intharacha อินทราชา	1180– 1205	Phra Pathomsuriya Thephanarathai Suwannabophit lineage Grandson of Sri Singha Overthrew Sri Thammasokarat II	Son of Anuracha Brother of Uthong I of Suphannaphum Canonically the 23th king of all Siam. King of five Dvaravati polity: Lopburi, Phraek Si Racha, Phripphri, Sukhothai-Nakhon Thai, and Singburi. Recorded name: Pra Poa Noome Thele Seri concurrent with king Thammikkaracha of Ayothaya concurrent with Uthong I of Suphannaphum
24		Phra Chao Uthong II พระเจ้าอู่ทองที่ ๒ or Mahitharaworaman III มหิธรวรมันที่ ๓		1205 – 1253	Son of Phra Phanom Thale Sri Son-in-law of Thammikkaracha	Grandson of Anuracha Great-grandson of Sri Singha concurrent with Thao Saen Pom of Suphannaphum concurrent with king Thonglanrach of Phrippphri
25		Phra Chao Chaiyasen พระเจ้าชัยเสน		1253 – 1289	Son-in-law of Uthong II	concurrent with Uthong III of Suphannaphum
26		Phra Chao Suwannaracha พระเจ้าสุวรรณราชา	Chao Suwanna Kuman เจ้าสุวรรณกุมาร	1289 – 1301	Grandson of Uthong II Son of Chaiyathat of Uthong II Adopted son of Chaiyasen Nephew of Chaiyasen	Xiān began to invade Angkor and Melayu in the 1290s. Xiān sent tributes to China five times during 1292 to 1299.
27		Phrachao Thammaracha พระเจ้าธรรมราชา		1301 – 1310	Son-in-law of Suwannaracha . Pathomsuriyawong Dynasty (by marriage)	Son of Thammatrailok of Sukhothai-Si Satchanalai Originally of Aphaikhamini Dynasty
28		Phrabat Somdet Phrachao Ramathibodi Sri Wisuthisuthiwong Ongkhapurisodom Borommachakkraphat Rachathirat Triphuwanathibet Borombophit Phraphuttha Chao Yu Hua พระบาทสมเด็จพระเจ้ารามาธิบดีศรี วิสุทธิสุธิวงศ์องคปุริโสดม บรมจักรพรรดิราชาธิราชตรีภูวนาธิเบศบรมบพิตรพระพุทธเจ้าอยู่หัว	Somdet Phra Chao Borommaracha สมเด็จพระเจ้าบรมราชา	1310 – 1344	Brother of Thammaracha Son-in-law of Suwannaracha . Pathomsuriyawong Dynasty (by marriage)	1313–1315 Xiān invasion of Champa. Son of Thammatrailok of Sukhothai-Si Satchanalai Originally of Aphaikhamini Dynasty concurrent with Uthong IV of Suphannaphum concurrent with Sam of Phripphri
29		Somdet Phra Ramathibodi I of Lavo and Ayutthaya สมเด็จพระรามาธิบดีที่ ๑ and Phra Chao Uthong V of Suphannaphum พระเจ้าอู่ทองที่ ๕	Worachetha Kuman วรเชษฐกุมาร	1344 – 1369	Son of Borommaracha After King Phraek Si Racha of the Lavapura seat passed, the throne passed through his daughter Son Sai, onto her son, the governor of Ayodhya: Phra Chao Uthong Founded a new Dynasty	Heir to Lavo, Succeded all Dvaravati polities: Phripphri, Lavo, Suphannaphum, and Ayothaya, cannonically the 27th king of Siam. Brother-in-law to Uthong IV of Suphannaphum Son of Borommaracha of Ayothaya. Grandnephew to Sam of Phripphri Brother-in-law to Pha Ngua of Suphannaphum. great-great-grandson of Uthong II of Lavo grandson of Thammatriloka of Sukhothai-Si Satchanalai
Governorship of Lavo merged with the Ayutthaya governorship when Uthong inherited Lavo Lavo merged into the Ayutthayan crown in 1388

Ayutthaya Kingdom (1351–1767)

Further information: Siam Confederation (Xiān), Lavo Kingdom, Suphannabhum, Phrip Phri, Nakhon Si Thammarat Kingdom, and Syamapura Kingdom (Qiān Zhī Fú)

The Ayutthaya Kingdom was a result of a unification between two states: the Kingdom of Suphannaphum (Suphanburi) and the Kingdom of Lavo. Though the Kingdom of Lavo was originally a Mon kingdom, the migration of the Tai peoples into the Chao Phraya basin replaced the original Mons, consequently becoming the governors of these regions. This resulted in the capital moving from Lavapura (Lopburi) and Suphannaphum (Suphanburi) to Ayodhya (Old Ayutthaya), a new capital. ^[27] Later on, the Kingdom of Nakhon si Thammarat came under the influence of Ayutthaya after seceding from Sukhothai, and Sukhothai losing influence and coming under Ayutthayan influence.

This conflict would last long into the history of Ayutthaya Kingdom, where families from the four major regional kingdoms vie over the throne of the kingdom. These kingdoms are: Kingdom of Nakhon Si Thammarat, Kingdom of Sukhothai, Kingdom of Lavo, and Kingdom of Suphannaphum. The Kingdom of Sukhothai was integrated into the Kingdom of Ayutthaya along with its noble families. ^[28]

1st Uthong dynasty (1351–1370)

No.	Portrait	Regnal name	Personal name	Birth	Reign from	Reign until	Death	Succession
Uthong V inherits all Dvaravati polity: Phripphri, Suphannaphum, Ayothaya, and Lavo
1		Somdet Phra Ramathibodi I of Lavo and Ayutthaya สมเด็จพระรามาธิบดีที่ ๑ and Phra Chao Uthong V of Suphannaphum and Phripphri พระเจ้าอู่ทองที่ ๕	Worachetha Kuman วรเชษฐกุมาร	3 April 1314	4 March 1351 [29]	1369 (18 years) (63 years old)		First King of Ayutthaya First King of Unified Lavo-Suphannaphum-Phripphri (Siam Confederation) Descendant of Phra Pathomsuriya Thephanarathai Suwannabophit Son-in-law of Uthong III of Suphannaphum Son of Boromracha of Lavo
2		Somdet Phra Ramesuan สมเด็จพระราเมศวร		1339	1369	1370 (less than one year) (abdicated)	1395 (56 years old)	Son of Ramathibodi I

1st Suphannaphum dynasty (1370–1388)

Further information: Suphannabhum

As previously mentioned, the kingdom of Ayutthaya was the result of the unification between two federations: Lavo and Suphannaphum. The ruling dynasty of Lavo gave rise to the Uthong Dynasty, in which the Suphannaphum dynasty came from the Suphannaphum federation. This federation held significant influence within the kingdom leading them to take control of the throne in 1310.

Suphannaphum Governor Seat
Regnal name	Reign from	Reign until	Notes
Uthong I	1163	1205	Younger brother of Pra Poa Noome Thele Seri , King of Phip Phli
Uthong II	1205	Unknown	Son of Pra Poa Noome Thele Seri Potentially ruled from Ayodhya
Vacant	Unknown	Mid-13th-C.
Saenpom  [ th ]	Unknown (Mid to late 13th century)		Possible Khom Sabat Khlon Lamphong [30] Suphan Buri was a tributary state of the Sukhothai Kingdom (1283–1298)
Uthong III	Unknown	1335	Son of Saenpom  [ th ] Possible father or father-in-law of Pha Ngua
Uthong IV	1335	1351	Son of Uthong III
Pha Ngua	1351	1370	Foundation of the Ayutthaya Kingdom (1351) Later became King Borommarachathirat I
Sri Thephahurat	1370	1374	Younger brother or son of Borommarachathirat I Father or relative of Nakhon In Born into a Suphannaphum father and a Phra Ruang mother
Nakhon In	1374	1408	Also the crown prince of Xiānluó Later became King Intharachathirat
Ai Phaya	1408	1424	Son of Intharachathirat Older brother of Borommarachathirat II
Suphannaphum merged into the Ayutthayan crown

No.	Portrait	Regnal name	Personal name	Birth	Reign from	Reign until	Death	Succession
3		Somdet Phra Borommarachathirat I สมเด็จพระบรมราชาธิราชที่ ๑	Khun Luang Pha Ngua ขุนหลวงพะงั่ว	1310	1370	1388 (18 years) (78 years old)		Descendant of Suphannaphum Kingdom's Royals Son of Boromracha of Suphannaphum Son-in-law of Boromracha of Lavo Overthrew Ramesuan
4		Somdet Phra Chao Thong Lan สมเด็จพระเจ้าทองลัน		1374	1388 (7 days) (14 years old)			Son of Borommarachathirat I

2nd Uthong dynasty (1388–1409)

No.	Portrait	Regnal name	Personal name	Birth	Reign from	Reign until	Death	Succession
(2)		Somdet Phra Ramesuan สมเด็จพระราเมศวร		1339	1388	1395 (7 years) (56 years old)		Son of Ramathibodi I Overthrew Thong Lan
5		Somdet Phra Ramrachathirat สมเด็จพระรามราชาธิราช	Somdet Phraya Ram Chao สมเด็จพญารามเจ้า	1356	1395	1409 (14 years) (usurped)	?	Son of Ramesuan

2nd Suphannaphum dynasty (1409–1569)

No.	Portrait	Regnal name	Personal name	Birth	Reign from	Reign until	Death	Succession	Viceroy
6		Somdet Phra Nakhon Intharachathirat สมเด็จพระนครอินทราชาธิราช	Chao Nakhon In เจ้านครอินทร์	1359	1409	1424 (15 years) (65 years old)		Son of Borommarachathirat I Grandson of Loe Thai Descendant of Phra Pathomsuriya Thephanarathai Suwannabophit Overthrew Ramrachathirat
7		Somdet Phra Borommarachathirat II สมเด็จพระบรมราชาธิราชที่ ๒	Chao Sam Phraya เจ้าสามพระยา	1386	1424	1448 (24 years) (62 years old)		Viceroy of Sukhothai Son of Nakhon Intharachathirat Grandson of Maha Thammaracha I Succession War, won by not participating	Ramesuan (son)
8		Somdet Phra Borommatrailokkanat สมเด็จพระบรมไตรโลกนาถ	Phra Ramesuan (II) พระราเมศวร (ที่๒)	1431	1448	1488 (40 years) (57 years old)		Viceroy of Sukhothai Son of Borommarachathirat II Grandson of Maha Thammaracha II	Chettha (son)
9		Somdet Phra Borommarachathirat III สมเด็จพระบรมราชาธิราชที่ ๓	Phra Borommaracha พระบรมราชา	1462	1488	1491 (3 years) (29 years old)		Son of Borommatrailokkanat Great-Grandson of Maha Thammaracha II	Chettha (brother)
10		Somdet Phra Ramathibodi II สมเด็จพระรามาธิบดีที่ ๒	Phra Chetthathirat พระเชษฐาธิราช	1473	1491	10 October 1529 (38 years) (56 years old)		Viceroy of Sukhothai Son of Borommatrailokkanat Great-Grandson of Maha Thammaracha II	Athittayawong (son)
11		Somdet Phra Borommarachathirat IV สมเด็จพระบรมราชาธิราชที่ ๔	Phra Athittayawong พระอาทิตยวงศ์	1488	10 October 1529	1533 (4 years) (45 years old)		Son of Ramathibodi II	Chairacha (brother)
12		Somdet Phra Ratsadathirat สมเด็จพระรัษฎาธิราช		1529	1533 (5 months) (4 years old)			Son of Borommarachathirat IV (under a regency)	Vacant
13		Somdet Phra Chairachathirat สมเด็จพระไชยราชาธิราช		1499	1533	1546 (13 years) (47 years old)		Younger Brother of Borommarachathirat IV Overthrew Ratsadathirat
14		Somdet Phra Yotfa สมเด็จพระยอดฟ้า		1535	1546	1548 (2 years) (usurped)	10 June 1548 (13 years old)	Son of Chairachathirat
—		Khun Worawongsathirat ขุนวรวงศาธิราช	Bunsi บุญศรี	1503	before 10 June 1548	11 November 1548 – 5 January 1549 (154 days) (45 years old)		Count of Ayutthaya Step-father of Yotfa Overthrew Yotfa	Chan (brother)
15		Somdet Phra Maha Chakkraphat สมเด็จพระมหาจักรพรรดิ	Phra Chao Chang Pheuak พระเจ้าช้างเผือก or Phra Thianracha พระเทียรราชา	1509	1548	1564 (18 years)		Younger Brother of Borommarachathirat IV and Chairachathirat Overthrew Worawongsathirat Abdicated and Entered Monkhood (1564-1568)	Ramesuan (son)
					1568	1569 (1 year) (60 years old)		De facto second reign as co-king, installed by Mahinthrathirat	Mahin (son)
16		Somdet Phra Mahinthrathirat สมเด็จพระมหินทราธิราช		1539	1568	2 August 1569 (1 year) (deposed)	c. late 1569 (30 years old)	Son of Maha Chakkraphat and Suriyothai	Vacant
First Fall of Ayutthaya

Sukhothai dynasty (1569–1629)

No.	Portrait	Regnal name	Personal name	Birth	Reign from	Reign until	Death	Succession	Viceroy
Vassal of the First Toungoo Empire (1569–1584)
17		Somdet Phra Sanphet I สมเด็จพระสรรเพชญ์ที่ ๑ (Name given by Bayinnaung - Toungoo Emperor ) or Somdet Phra Maha Thammarachathirat I สมเด็จพระมหาธรรมราชาธิราชที่ ๑	Khun Phirenthorathep ขุนพิเรนเทพ or Somdet Phra Maha Thammaracha V สมเด็จพระมหาธรรมราชาที่ ๕ (Name given by King Maha Chakkraphat)	1517	1569	c. 30 June 1590 (21 years) (73 years old)		Marquess of Phitsanulok Descendant of the Phra Ruang Dynasty of Sukhothai Son-in-law of Maha Chakkraphat Installed by Bayinnaung of Toungoo Empire	Naresuan (son)
Independence from the First Toungoo Empire, 1584
18		Somdet Phra Sanphet II สมเด็จพระสรรเพชญ์ที่ ๒	Somdet Phra Naresuan the Great สมเด็จพระนเรศวรมหาราช	1555/56	1 July 1590	25 April 1605 (15 years) (49 years old)		Son of Sanphet I	Ekathotsarot (brother)
19		Somdet Phra Sanphet III สมเด็จพระสรรเพชญ์ที่ ๓	Somdet Phra Ekathotsarot สมเด็จพระเอกาทศรถ	1557	25 April 1605	1610 (5 years) (53 years old)		Son of Sanphet I	Suthat (son)
20		Somdet Phra Sanphet IV สมเด็จพระสรรเพชญ์ที่ ๔	Somdet Phra Si Saowaphak สมเด็จพระศรีเสาวภาคย์	1585	1610	1611 (1 year, 2 months) (26 years old)		Son of Sanphet III	Vacant
21		Somdet Phra Borommaracha I สมเด็จพระบรมราชาที่ ๑	Somdet Phra Songtham สมเด็จพระเจ้าทรงธรรม	1590	1611	12 December 1628 (17 years) (38 years old)		Son of Sanphet III Next in line after the murder of Sanphet IV	Si Sorarak (son)
22		Somdet Phra Borommaracha II สมเด็จพระบรมราชาที่ ๒	Somdet Phra Chetthathirat (II) สมเด็จพระเชษฐาธิราช	c. 1613	12 December 1628	1628–1629 (1 year) (16 years old)		Son of Borommaracha I	Vacant
23		Somdet Phra Athittayawong สมเด็จพระอาทิตยวงศ์		1620	1629 (36 days) (usurped)		1637 (17 years old)	Son of Borommaracha I Overthrew Borommaracha II , helped by Sanphet V

Prasat Thong dynasty (1629–1688)

No.	Portrait	Regnal name	Personal name	Birth	Reign from	Reign until	Death	Succession	Viceroy
24		Somdet Phra Chao Sanphet V สมเด็จพระสรรเพชญ์ที่ ๕	Somdet Phra Chao Prasat Thong สมเด็จพระเจ้าปราสาททอง	1599	1629 [31] [32]	August 1655 (26 years) (56 years old)		Defence Minister and Marquess of Ayutthaya Son-in-law of Borommaracha I unclear origins: maternal cousin of Borommaracha I or illegitimate son of Sanphet III Overthrew Athittayawong	Vacant
25		Somdet Phra Sanphet VI สมเด็จพระสรรเพชญ์ที่ ๖	Somdet Chao Fa Chai สมเด็จเจ้าฟ้าไชย	1630	August 1655	1656 (1 year) (26 years old)		Son of Sanphet V
26		Somdet Phra Sanphet VII สมเด็จพระสรรเพชญ์ที่ ๗	Somdet Phra Si Suthammaracha สมเด็จพระศรีสุธรรมราชาธ	1600	August 1656	26 October 1656 (~2 months) (56 years old)		Brother of Sanphet V Overthrew Sanphet VI	Narai (nephew)
27		Somdet Phra Ramathibodi III สมเด็จพระรามาธิบดีที่ ๓	Somdet Phra Narai the Great สมเด็จพระนารายณ์มหาราช	16 February 1632	26 October 1656	11 July 1688 (32 years) (56 years old)		Son of Sanphet V Overthrew Sanphet VII	Vacant

Ban Phlu Luang dynasty (1688–1767)

No.	Portrait	Regnal name	Personal name	Birth	Reign from	Reign until	Death	Succession	Viceroy
28		Somdet Phra Phetracha สมเด็จพระเพทราชา	Somdet Phra Mahaburut สมเด็จพระมหาบุรุษ	1632	11 July 1688	5 February 1703 (14 years) (71 years old)		Elephant Corps Minister and General Son-in-law, Brother-in-law of Ramathibodi III Overthrew Ramathibodi III	Sorasak (stepson)
29		Somdet Phra Sanphet VIII สมเด็จพระสรรเพชญ์ที่ ๘	Somdet Phra Suriyenthrathibodi สมเด็จพระเจ้าสุริเยนทราธิบดี or Phra Chao Seua พระเจ้าเสือ	1661	5 February 1703	9 February 1709 (6 years) (48 years old)		Adoptive Son of Phetracha Son of Ramathibodi III	Phet (son)
30		Somdet Phra Sanphet IX สมเด็จพระสรรเพชญ์ที่ ๙	Phra Chao Thai Sa พระเจ้าท้ายสระ	1679	9 February 1709	13 January 1733 (23 years) (54 years old)		Son of Sanphet VIII	Phon (brother)
31		Somdet Phra Maha Thammarachathirat II สมเด็จพระมหา ธรรมราชาธิราชที่ ๒	Somdet Phra Chao Yu Hua Borommakot สมเด็จพระเจ้าอยู่หัวบรมโกศ	c. 1681 [33]	13 January 1733	26 April 1758 (26 years) (77 years old)		Son of Sanphet VIII Succession War, overthrew the heir apparent - Prince Aphai	Senaphithak (son)
									Phonphinit (son)
32		Somdet Phra Maha Thammarachathirat III สมเด็จพระมหา ธรรมราชาธิราชที่ ๓	Somdet Phra Chao Uthumphon สมเด็จพระเจ้าอุทุมพร	1733	1 May 1758	1758 (3 months)	1796 (~63 years old)	Son of Maha Thammarachathirat II	Vacant
					1760			De facto second reign as co-king, installed by Ayutthayan Nobles
					refused a third de facto reign, taken to Konbaung as hostage until death
33		Somdet Phra Borommaracha III สมเด็จพระบรมราชาที่ ๓	Somdet Phra Thinang Suriyat Amarin สมเด็จพระที่นั่งสุริยาศน์อมรินทร์ or Somdet Phra Chao Ekkathat สมเด็จพระเจ้าเอกทัศ	1718	1758	7 April 1767 (9 years)	17 April 1767 (49 years old)	Son of Maha Thammarachathirat II Overthrew Maha Thammarachathirat III
Second Fall of Ayutthaya

Thonburi Kingdom (1767–1782)

Further information: Thonburi Kingdom and Taksin's reunification of Siam

Thonburi dynasty (1767–1782)

No.	Portrait	Regnal name	Personal name	Birth	Reign from	Reign until	Death	Succession	Viceroy
1		Somdet Phra Sanphet X สมเด็จพระสรรเพชญ์ที่ ๑๐ or Somdet Phra Borommaracha IV สมเด็จพระบรมราชาที่ ๔	Somdet Phra Chao Taksin the Great สมเด็จพระเจ้าตากสินมหาราช or 鄭昭 (Zhèng Zhāo / Dên Chao)	17 April 1734	28 December 1767	1 April 1782 (14 years) (deposed) [34] [35] [a]	7 April 1782 (47 years old) (executed) [b]	Marquess of Tak Son-in-law of Rama I Reunited Ayutthaya, refounding it as Thonburi	Inthraphithak (son)

Rattanakosin Kingdom (1782–present)

Further information: Rattanakosin Kingdom

Chakri dynasty (1782–present)

Further information: Chakri dynasty

No.	Portrait	Regnal name and Seal	Ceremonial name	Birth (Parents)	Accession (Coronation)	Reign until	Death	Succession	Viceroy
1		Somdet Phra Ramathibodi IV สมเด็จพระรามาธิบดีที่ ๔ (name originally taken) or Rama I พระรามที่ ๑ (รัชกาลที่ ๑) (retroactively given)	Phrabat Somdet Phra Paramoruracha Maha Chakri Boromanat Phra Phutthayotfa Chulalok the Great พระบาทสมเด็จพระปรโมรุราชามหาจักรีบรมนารถ พระพุทธยอดฟ้าจุฬาโลกมหาราช (posthumously by Rama III) or Somdet Chao Phraya Maha Kasatseuk สมเด็จเจ้าพระยามหากษัตริย์ศึก	20 March 1737 4th child (2nd son) of Thongdi and Daoreung	6 April 1782 (1st: 10 June 1782, 2nd: 17 June 1785)	7 September 1809 (27 years, 154 days) (72 years old)		Prime Minister & Duke of Ayutthaya Father-in-law of Borommaracha IV Descendant of Kosa Pan unclear origins: possible descandant of Sanphet III Overthrew Borommaracha IV	Maha Sura Singhanat (brother)
									Itsarasunthon (son)
2		Rama II พระรามที่ ๒ (รัชกาลที่ ๒) (retroactively given)	Phrabat Somdet Phra Boromratchapongchet Maha Itsarasunthon Phra Phutthaloetla Naphalai พระบาทสมเด็จพระบรมราชพงษเชษฐมเหศวรสุนทร พระพุทธเลิศหล้านภาลัย (posthumously by Rama III)	24 February 1767 4th child (2nd son) of Rama I and Queen Amarindra	7 September 1809 (17 September 1809)	21 July 1824 (14 years, 317 days) (57 years old)		Son of Rama I	Maha Senanurak (brother)
3		Rama III พระรามที่ ๓ (รัชกาลที่ ๓) (retroactively given)	Phrabat Somdet Phra Paramathiworaset Maha Chetsadabodin Phra Nangklao Chao Yu Hua พระบาทสมเด็จพระปรมาธิวรเสรฐมหาเจษฎาบดินทรฯ พระนั่งเกล้าเจ้าอยู่หัว (posthumously by Rama IV) or Phra Maha Chettha Chao พระมหาเจษฎาราชเจ้า	31 March 1788 3rd child (2nd son) of Rama II and 1st child of Consort Sri Sulalai	21 July 1824 (1 August 1824)	2 April 1851 (26 years, 255 days) (63 years old)		Minister of Trade and Foreign Affairs Son of Rama II Elected by the Council of Nobles	Sakdiphonlasep (uncle)
4		Rama IV พระรามที่ ๔ (รัชกาลที่ ๔) (retroactively given)	Phrabat Somdet Phra Poramenthra Ramathibodhi Srisindra Maha Mongkut Phra Chomklao Chao Yu Hua พระบาทสมเด็จพระปรเมนทรรามาธิบดีศรีสินทรมหามงกุฎ พระจอมเกล้าเจ้าอยู่หัว or Phra Sayam Thewa Maha Makut Witthayathe Great พระสยามเทวมหามกุฏวิทยมหาราช	18 October 1804 44th child (22nd son) of Rama II and 2nd child of Queen Sri Suriyendra	2 April 1851 (15 May 1851)	1 October 1868 (17 years, 182 days) (63 years old)		Son of Rama II Half-brother of Rama III Elected by the Council of Nobles	Pinklao (brother)
5		Rama V พระรามที่ ๕ (รัชกาลที่ ๕) (retroactively given)	Phrabat Somdet Phra Poraminthra Maha Chulalongkorn Phra Chulachomklao Chao Yu Hua พระบาทสมเด็จพระปรมินทรมหาจุฬาลงกรณ์ฯ พระจุลจอมเกล้าเจ้าอยู่หัว or Phra Piya the Great พระปิยมหาราช (his full name is 979 characters long)	20 September 1853 9th child (5th son) of Rama IV and 1st child of Queen Debsirindra	1 October 1868 (1st: 11 November 1868, 2nd: 16 November 1873)	23 October 1910 (42 years, 22 days) (57 years old)		Son of Rama IV Elected by the Council of Nobles (Regency until 1873)	Wichaichan (cousin)
									Viceroyalty abolished in 1885 after the Front Palace Crisis
6		Rama VI พระรามที่ ๖ (รัชกาลที่ ๖) (new regnal name)	Phrabat Somdet Phra Poramenthra Maha Vajiravudh Phra Mongkutklao Chao Yu Hua พระบาทสมเด็จพระปรเมนทรมหาวชิราวุธ พระมงกุฎเกล้าเจ้าอยู่หัว or Phrabat Somdet Phra Ramathibodi Sisinthara Maha Vajiravudh Phra Mongkutklao Chao Yu Hua พระบาทสมเด็จพระรามาธิบดีศรีสินทรมหาวชิราวุธ พระมงกุฎเกล้าเจ้าอยู่หัว (name to be used during his lifetime) or Phra Maha Thirarat Chao พระมหาธีรราชเจ้า	1 January 1881 28th child (11th son) of Rama V and 2nd child of Queen Saovabha Phongsri	23 October 1910 (1st: 11 November 1910, 2nd: 28 November 1911)	26 November 1925 (15 years, 34 days) (44 years old)		Prince of Ayutthaya Sri Dvaravati Son of Rama V Crown Prince
7		Rama VII พระรามที่ ๗ (รัชกาลที่ ๗)	Phrabat Somdet Phra Poramenthra Maha Prajadhipok Phra Pokklao Chao Yu Hua พระบาทสมเด็จพระปรมินทรมหาประชาธิปก พระปกเกล้าเจ้าอยู่หัว	8 November 1893 27th child (31st son) of Rama V and 9th child of Queen Saovabha Phongsri	26 November 1925 (25 February 1926)	2 March 1935 (9 years, 96 days) (abdicated)	30 May 1941 (47 years old)	Prince of Sukhothai Son of Rama V Brother of Rama VI 1924 Palace Law of Succession
8		Rama VIII พระรามที่ ๘ (รัชกาลที่ ๘)	Phrabat Somdet Phra Poramenthra Maha Ananda Mahidol Phra Atthamaramathibodin พระบาทสมเด็จพระปรเมนทรมหาอานันทมหิดล พระอัฐมรามาธิบดินทร	20 September 1925 2nd child (1st son) of Mahidol Adulyadej and Princess Srinagarindra	2 March 1935 (13 August 1946; posthumous) [37]	9 June 1946 (11 years, 99 days) (20 years old)		Grandson of Rama V Nephew of Rama VI and Rama VII 1924 Palace Law of Succession Elected by the Cabinet
9		Rama IX พระรามที่ ๙ (รัชกาลที่ ๙)	Phrabat Somdet Phra Poraminthra Maha Bhumibol Adulyadej the GreatMahitalathibet Ramathibodi Chakri Naribodin Sayamintharathirat Boromanatbophit พระบาทสมเด็จพระปรมินทรมหาภูมิพลอดุลยเดช มหาราช มหิตลาธิเบศรรามาธิบดี จักรีนฤบดินทร สยามินทราธิราช บรมนาถบพิตร or Phra Phatthara the Great พระภัทรมหาราช	5 December 1927 3rd child (2nd son) of Mahidol Adulyadej and Princess Srinagarindra	9 June 1946 (5 May 1950)	13 October 2016 (70 years, 126 days) (88 years old)		Grandson of Rama V Brother of Rama VIII 1924 Palace Law of Succession Longest-reigning Thai monarch
10		Rama X พระรามที่ ๑๐ (รัชกาลที่ ๑๐)	Phrabat Somdet Phra Poramenthra Ramathibodi Sisinthara Maha Vajiralongkorn Phra Wachiraklao Chao Yu Hua พระบาทสมเด็จพระปรเมนทรรามาธิบดีศรีสินทรมหาวชิราลงกรณ พระวชิรเกล้าเจ้าอยู่หัว	28 July 1952 2nd child (only son) of Rama IX and Queen Sirikit	13 October 2016 (4 May 2019) [38]	Incumbent (9 years, 138 days) (73 years old)		Son of Rama IX Crown Prince

Timeline of monarchs

See also

• Family tree of Thai monarchs
• Monarchy of Thailand
• List of rulers of Lan Na
• List of Thai royal consorts
• Rama (Kings of Thailand)
• Chakri dynasty
• Regent of Thailand
• Thailand

Notes

1. Accounts vastly differ to when Taksin stepped down from the throne and entered the monkhood, which has been argued to have occurred as early as three months prior to his execution. ^[36]
2. Traditionally accepted date of his execution

References

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2. ""พ่อขุน" ไม่เคยใช้เรียกกษัตริย์ที่ครองราชย์อยู่ "รามคำแหง" พระนามที่ชวนฉงน". Silpa-mag.com. Silpawattanatham. 2023.
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12. Probably The Chiang Mai Chronicle, ISBN   974-7100-62-2
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19. Princess Maha Chakri Sirindhorn Foundation, 2011 ^{[ broken anchor ]}: 43.
20. Pan Hla, Nai (1968). Razadarit Ayedawbon (in Burmese) (8th printing, 2005 ed.). Yangon: Armanthit Sarpay.
21. Pan Hla 2005: 38
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23. SAC, 2006 ("Charuek Wat Pa Mamuang (Phasa Khamen)"): online.
24. พจนานุกรมศัพท์วรรณคดีไทย สมัยสุโขทัย ไตรภูมิกถา, หน้า 3
25. Chakrabongse, C., 1960, Lords of Life, London: Alvin Redman Limited
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