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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. 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 run separately 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 canonically considered to be the 27th monarch of Siam. The number of monarchs up to today would total to 101 monarchs.
Titles and naming conventions
Sukhothai Kingdom
All of the mentioned titles are now defunct due to the abolition of the peerage
Khun — ขุน — Originally meaning “lord” or “chieftain,” Khun was a title used for local rulers or leaders of settlements. In later periods, is given to bureaucratic positions within government mostly to ministers, though a number of Shan states still retain this title for their rulers and kings. Originally a Tai word.
- Khun Ban Muang - King of Sukhothai
- Hkun Hseng Awng Tun - King of Hsenwi
- Khun Khreua - King of Lanna
Phaya — พญา (sometimes written พระยา in later periods) — Originally meaning “lord.” In later periods, this title is given to people governing second-tier or lower-class cities. This title is now an equivalent to the title Marquess. Originally a Pali-Sanskrit word. This title was also used in numerous other Tai-ethnic kingdoms in the regions. The title is also adapted to a couple of higher titles such as Chao Phaya and Somdet Chao Phaya. Which is equivalent to Duke and Grand Duke in that order, though these title holders often do not hold fief / territory. Though when they do hold hand, it is tantamount to half the nation, such as the position of the prime minister of northern Siam, comes with the position of grand duke. The title is defunct. This title is also bestowed upon vassal kings and monarchs.
- Phaya Loe Thai - King of Sukhothai
- Phaya Mangrai - King of Lanna
- Phraya Kakawannathiparatcha Wachiraprakarn - Princely monarch of Chiang Mai
- Phaya Khun Fong - monarch of Nan (a mixture of the title Phaya and Khun)
Pho Khun — พ่อขุน — Originally meaning “lord father.” It reflects the paternal kingship ideology of the Sukhothai era, in which the king was regarded as a benevolent father to his subjects. The title is now defunct. Originally a Tai word.
- Pho Khun Ram Khamhaeng - King of Sukhothai
Pu Khun — ปู่ขุน — Originally meaning “lord grandfather.” It is a term to used for deceased rulers. The title is now defunct. Originally a Tai word.
Pu Phaya — ปู่พญา — Originally meaning “lord grandfather.” It is a term to used for deceased rulers. The title is now defunct. Originally a Tai + Pali-Sanskrit word.
Phrabat Kamrateng An Sri — พระบาทกัมรเตงอัญศรี — The monarch also adopted the Khmer prestige title Kamrateng An (Thai: กมฺรเตงฺ อญฺ), meaning "our lord", as regnal title. It is used for informal reference of the king. Though it is informal to refer to the chao phraya kingdom's king, it is nonetheless the formal way to refer to the northern and other regional monarchs.
- Phra Chao Uthong II - King of the Siamese Confederation
- Phra Chao Taksin - King of Thonburi
- Phra Chao Kawilalolot Suriyawongse - King of Chiang Mai
- Phra Chao Tilokkarat - King of Lanna
- Phra Chao Suriyaphong Pharitdet - King of Nan
Chao — เจ้า — Originally meaning “lord/prince/master." It is commonly used for loyalty and noblemen. The title is used to refer to a number of Shan states still retain this title for their rulers and kings.
- Chao Sam Phaya - King of Ayutthaya
- Sao Kawng Kiao Intaleng - King of Kengtung (Chiang Tung)
- Chao Kaew Nawarat - Princely monarch of Chiang Mai
Phrabat Somdet — พระบาทสมเด็จ — Originally meaning "Most Exalted Majesty."
Somdet Phra — สมเด็จพระ — Originally meaning "Exalted Majesty."
Phrabat Somdet Phra — พระบาทสมเด็จพระ — Originally meaning "Most Exalted Royal Majesty."
Phrabat Somdet Phra Chao — พระบาทสมเด็จพระเจ้า — Originally meaning "Most Exalted Majesty the Lord."
Phrabat Somdet Phra Poramenthara ... Chao Yu Hua — พระบาทสมเด็จพระปรเมนทร...เจ้าอยู่หัว — Originally meaning “His Most Exalted Majesty the Supreme Sovereign, the Lord Above Our Heads.” (used for Rama 1,3,5,...; odd number)
Phrabat Somdet Phra Poram<u>i</u>nthara ... Chao Yu Hua — พระบาทสมเด็จพระปรมินทร...เจ้าอยู่หัว — Originally meaning “His Most Exalted Majesty the Supreme Sovereign, the Lord Above Our Heads.” (used for Rama 2,4,6,...; even number)
- Klao Chao Yu Hua — เกล้าเจ้าอยู่หัว is not necessarily an assumed title for all the monarchs, both Rama I, Rama II, Rama VIII, and Rama IX do not have this suffix in their titles. This is the king's regnal name.
Maha ... Paramarachathirat — ปรมราชาธิราช — Originally meaning "The most supreme sovereign" This is often used when abbreviating names of kings. This is also the equivalent of the western title Rex or Regina as in Charles III Dei Gratia Rex.
In the Sukhothai Kingdom, the monarch used the title Khun () or Phaya (), while Pho Khun/ Phaya () or Phoo Khun/ Phaya () were used to refer to deceased monarchs or senior relatives who were monarchs. The monarch also adopted the Khmer prestige title Kamrateng An (), meaning "our lord", as regnal title.
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 (, '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.
Western nations referred to the monarch as the "King of Siam" (), 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. When the kingdom's name was changed to Thailand, the monarch's Western title changed accordingly.
Regarding relations between dynasties and houses
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.
Regarding dynasties and houses
In the Siamese context, a dynasty includes all monarchs and their kinsmen who have ascended to the throne. This means that a dynasty encompasses individuals of the same bloodline, including brothers, uncles, and other relatives.
Within a dynasty, houses function as sub-units. Multiple houses can exist within a single dynasty. A king inherits his house from his father, regardless of whether the father was a reigning monarch; what matters is that the father was a son of a king or a vice-king. As a result, a dynasty may contain numerous houses—for example, the Chakri Dynasty includes over a hundred cadet houses, divided into royal and viceroyal branches.
The concept of houses, by contrast, is a more recent construct used to describe subdivisions within a dynasty. Multiple houses can exist within the same dynasty, each representing a distinct patrilineal branch. A king is considered to belong to the house of his father, regardless of whether the father was a reigning monarch, as long as he was a son of a king or a vice-king.
Houses are passed from father to son. When brothers ascend the throne in succession, they belong to the same house if they do not have a son who later becomes king.
For example, Rama I, Rama II, and Rama III are considered part of the same house. Rama IV, however, is considered to be a part of a new house, as he was a brother of Rama III rather than his son. Rama V, Rama VI, and Rama VII belonged to Rama IV's house; since neither Rama VI nor Rama VII had sons who became king, the house continued unchanged.
The throne later passed through Prince Mahidol, establishing another new house. His sons, Rama VIII and Rama IX, belonged to this same house, with Rama IX succeeding his brother.
Example: Lineage of the Chakri Dynasts and its component houses
- · House Ramathibodi ·
- 15px Rama I
- Houses | Indrāngura Dabbakula Suriyakul Chatrakul Phungbun Tārākara Duangchakra Sudasna
- 15px Rama II son of Rama I
- Houses | Mālakul Abharanakul Klauaymai Kusuma Tejātivongse Phanomvan Kunjara Renunandana Niyamisara Dinakara Baidurya Mahākul Vajrivansa Xumsaeng Sanidvongs Morakot Nilaratna Arunvongse Kapitthā Pramoja
- · House Mongkut ·
- 15px Rama IV son of Rama II
- House | Chakrabandhu Bhānubandhu Chitrabongs Navavongsa Supratishtha Kritākara Gaganānga Sukhasvasti Dvivongs Thongyai Kshemasanta Kamalāsana Kshemasrī Sridhavaja Thongthaem Jumbala Devakula Svastikula Chandradatta Jayānkura Varavarna Tisakula Sobhanga Sonakul Vadhanavongs Svastivatana Jayanta
- 15px Rama V son of Rama IV
- House | Kitiyākara Rabībadhana Pavitra Chirapravati Ābhākara Paribatra Chhatr-jaya Beñ-badhana Chakrabongs Yugala Vudhijaya Suriyong Rangsit Chudādhuj Varanand
- · House Mahidol ·
- · Prince Mahidol Adulyadej · son of Rama V
- 15px Rama VIII son of Prince Mahidol Adulyadej
- 15px Rama IX son of Prince Mahidol Adulyadej
- 15px Rama X son of Rama IX
- House | Vivacharawongse
- 15px Rama VI son of Rama V
- 15px Rama VII son of Rama V
- 15px Rama III son of Rama II
- Houses | Sirivongse Komen Ganechara Ngon-rath Latāvalya Xumsai Piyakara Uraibongse Arnob Lamyong Suparna Sinharā Jambūnud
Relations between dynasty
- 15px Pathomsuriyawong Dynasty (700–1351) - the line of Phra Pathomsuriya Thephanarathai Suwannabophit (b.742; d.800) Came to power using the right of inheritance.
- 15px Phra Ruang Dynasty (1238–1438; 1468–1474) - the line of Inthrabodinthrathit (b.1188; d.1270) from Suriwawong, the elder son of Sri Singha of <u>Pathomsuriyawong</u>. 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.
- 15px Later Suphannaphum Dynasty (1409–1569) - the line of Nakhon Intharachathirat (b.1359; d.1424) <u>mother</u> from Loe Thai of <u>Phra Ruang Dynasty</u>, 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.
- 15px Sukhothai Dynasty (1569–1629) - the line of Sanphet I (b.1509; d.1590) known relation to <u>Phra Ruang Dynasty</u> 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.
- 15px 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 <u>Sukhothai Dynasty.</u> Sanphet V, Defence Minister and Marquess Prime Minister of Ayutthaya overthrew king Athittayawong. Came to power using the right of conquest.
- 15px 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 <u>Prasat Thong Dynasty.</u> 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.
- 15px 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 <u>Sukhothai Dynasty</u>. Rama I, former Count of Ratburi, Grand Duke Prime Minister of Thonburi overthrew king Sanphet X. Came to power using the right of conquest.
- 15px Aphaikhamini Dynasty (957–c.1100s) - the line of Phraya Aphaikhamini (died 959) Came to power using the right of election.'
- 15px Uthong Dynasty (1351–1370) - the line of Uthong V & Ramathibodi I (b.1314; d.1369) <u>mother</u> is from Anuracha (b.1112; d.1167) younger son of Sri Singha of <u>Pathomsuriyawong</u>. 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.
- 15px 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.
- 15px Former Suphannaphum Dynasty (1370–1388) - the line of Borommarachathirat I (b.1310; d.1388) <u>father</u> is Uthong III of <u>Suphannaphum</u>. Borommarachathirat I, king of the constituent kingdom of Suphannaphum overthrew king Ramesuan. Came to power using the right of conquest.
Regarding vassal and constituent kingdoms
Throughout the history of Thailand, political power has often been structured around the Mandala system. Under this system, a central polity exerted influence over a network of subordinate polities within its sphere. The rulers of these lesser polities typically pledged allegiance to a paramount ruler, often referred to as a “high king.”
The nature of this hierarchy evolved over time. During the Ayutthaya era, the system allowed for a relatively high degree of autonomy among subordinate rulers. The king of the Ayutthaya Kingdom governed from Ayutthaya (modern-day Ayutthaya city), while rulers of other important centers, such as Suphannaphum, administered their own domains with considerable independence.
Over time, however, this autonomy diminished. The relationship increasingly resembled that of a centralized monarchy with appointed governors. The high king gained the authority to depose subordinate rulers and replace them, sometimes even installing entirely new dynasties. In some cases, such as the Kingdom of Chiang Mai, the local monarchy itself was abolished.
Subordinate rulers were not merely passive actors; they could also challenge central authority. During the Dvaravati period, it was relatively common for vassal rulers to overthrow a high king, establish their own dynasty, or break away to form a new mandala. This led to frequent shifts in regional dominance, with different polities rising to prominence as political centers.
Such upheavals became less frequent in later periods but did not disappear entirely. The last major instance of a subordinate ruler seizing power occurred in 1782, when Rama I overthrew Sanphet X and established a new dynasty. Earlier examples include coups in 1629 and 1569 but this was limited to blood relatives. By contrast, during the Dvaravati period, similar events were far more frequent, occurring in years such as 800, 859, 892, and 957, among others where commoners and local lords alike would become monarchs.
Composition of the Dvaravati Domain
- Dvaravati Mandala
- Phraek Si Racha
- Suphanburi (Suphannaphum)
- Phetchaburi (Phripphri)
- Lopburi (Lavo)
- Nakhon Pathom
- Si Thep
- Ayutthaya (Ayothaya)
- Sing (Jayasimhapuri)
- Sukhothai - Si Satchanalai
- Uthong
Composition of Sukhothai Domain
- Sukhothai Mandala
- Sukhothai Kingdom
- Si Satchanalai Kingdom
Composition of Ayutthaya Domain
- Ayutthaya Mandala
- Ayothaya Sri Dvaravati
- other fiefs, counties and duchies
- Suphannaphum
- Phripphri
- Lavo
- Thawai
- Tanaosi
- Sukhothai
Composition of Rattanakosin Domain
- Rattanakosin Mandala
- Mainland
- other fiefs, counties and duchies
- Duchy of Nakhon Ratchasima
- Duchy of Nakhon Si Thammarat
- Shan Domains
- Principality of Chiang Tung
- Principality of Chiang Khaeng
- Canton of Chiang Lap
- Federation of 12 Tai Cantons
- Canton of Hokamchenghung (นครเมืองหอคำเชียงรุ่ง)
- Canton of Je (นครเมืองแจ)
- Canton of Luang (นครเมืองลวง)
- Canton of Hon (นครเมืองหน)
- Canton of Hai (นครเมืองราย)
- Canton of Ngad (นครเมืองงาด)
- Canton of Lha (นครเมืองหล้า)
- Canton of Hing (นครเมืองฮิง)
- Canton of Chiang Neua (นครเมืองเชียงเหนือ)
- Canton of Ou Neua (นครเมืองอูเหนือ)
- Canton of Chiang Thong (เมืองเชียงทอง )
- Canton of Phuthaen Luang (นครเมืองภูแถนหลวง)
- Lanna Domains
- Kingdom of Chiang Mai
- Principality of Thoen
- Principality of Lampang
- Principality of Nan
- Principality of Lamphun
- Principality of Phrae
- Malay Domains
- Sultanate of Kedah
- Kingdom of Setul Mambang Segara
- Kingdom of Perlis
- Kingdom of Kubang Pasu Darul Qiyam
- Sultanate of Patani
- Kingdom of Rahman
- Sultanate of Terengganu
- Kingdom of Besut Darul Iman
- Sultanate of Kelantan
- Lao Domains
- Kingdom of Vientiane
- Kingdom of Luang Phrabang
- Kingdom of Champassak
- Principality of Phuan
- Principality of Phongsali
- Federation of the 6 Hua Phan Cantons
- Canton of Hiam (เมืองเหียม)
- Canton of Son (เมืองซ่อน)
- Canton of Cham Neua (เมืองชำเหนือ)
- Canton of Cham Tay (เมืองชำใต้)
- Canton of Kho (เมืองเชียงฆอ)
- Canton of Sop'et (เมืองสบแอด)
- Canton of Hua Muang (เมืองหัวเมือง
- Federation of the 12 Tai Lords (has more than 12 lords)
- Canton of Lai (เมืองไล)
- Canton of Te (เมืองแต่)
- Canton of Jian (เมืองเจียน)
- Canton of Mun (เมืองมุน)
- Canton of Bang (เมืองบาง)
- Canton of Thaeng (เมืองแถง)
- Canton of Khwai (เมืองควาย)
- Canton of Dung (เมืองดุง)
- Canton of Muai (เมืองม่วย)
- Canton of La (เมืองลา)
- Canton on Moh (เมืองโมะ)
- Canton of Wat (เมืองหวัด)
- Canton of Sang (เมืองซาง)
- Canton of So (เมืองสอ)
- Canton of Than (เมืองถาน)
- Canton of Lo (เมืองลอ)
- Kingdom of Cambodia
- Principality of Hà Tiên
Regarding the relationship between kings, co-kings, viceroys, and deputy viceroys
Viceroy
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 members 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 viceroys had their own palace and administration in the front palace.
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. In which king Pinklao was crowned using the title Phrabat Somdet Phra .... Chao Yu Hua in equal ranking to the first king. Thus, allowing the front palace to institute the first king's regalia and ornamentation within the front palace which had previously been forbidden.
Deputy viceroy
The deputy viceroys had their own palace and administration in the rear palace. The deputy viceroy position was seldom bestowed. There had only been three bestowals in the last 700 years. This role is similar to the viceroys but are subservient to the king and the viceroy.
{| class="wikitable" style="text-align:center; width:100%;"
! colspan="6" |List of deputy viceroys
|-
!No.
!Portrait
! Regnal name
! Reign from
! Reign until
! Notes
|-
!1
|frameless|100x100px
|Chobkhotchaprasit
นายจบคชประสิทธิ์
| colspan="2" |c.1680s
|
|-
!2
|100px
| Phon
เจ้าฟ้าพร
| 1703
| 1708
|
- became king King Maha Thammarachathirat II
|-
!3
|frameless|136x136px
|Thong In
สมเด็จพระเจ้าหลานเธอ เจ้าฟ้าทองอิน กรมพระราชวังบวรสถานภิมุข
|1782
|1806
|
- nephew of Rama I
|-
!
!
! colspan="4" |vacant until the abolition of the front palace and the rear palace
|}
Co-king
Co-kings were monarchs which had previously abdicated, but were invited back to power. Often they were brought back with the same amount of authority as the main king. Though this usually didn't last and often voluntarily relinquished power and even refused a third co-kingship. A famous example is when King Maha Thammarachathirat III was invited back into the position of king during King Borommaracha III<nowiki/>'s reign.
Sukhothai-Si Satchanalai city-state (679–1238)
Intharachaithirat dynasty (679–687)
{| class="wikitable" style="text-align:center; width:100%;"
! style="background-color:#F0DC82" width="3%" | No.
! style="background-color:#F0DC82" width="4%" | Portrait
! style="background-color:#F0DC82" width="15%" | Regnal name
! style="background-color:#F0DC82" width="15%" | Personal name
! style="background-color:#F0DC82" width="9%" | House
! style="background-color:#F0DC82" width="15%" | Reign
! style="background-color:#F0DC82" width="20%" | Succession
! style="background-color:#F0DC82" width="30%" | Notes
|-
! align="center" |1
|frameless|100x100px
| colspan="2" |Inthrachaithirat
อินทราไชยธิราช
|Inthrachai
|679 – 687
(9 years)
|First king of a Sukhothai polity
|Overthrown by Phalithirat
|}
Lavo dynasty (687–c.700s)
{| class="wikitable" style="text-align:center; width:100%;"
! style="background-color:#F0DC82" width="3%" | No.
! style="background-color:#F0DC82" width="4%" | Portrait
! style="background-color:#F0DC82" width="15%" | Regnal name
! style="background-color:#F0DC82" width="15%" | Personal name
! style="background-color:#F0DC82" width="9%" | House
! style="background-color:#F0DC82" width="15%" | Reign
! style="background-color:#F0DC82" width="20%" | Succession
! style="background-color:#F0DC82" width="30%" | Notes
|-
! align="center" |2
| frameless|100x100px
| colspan="2" | Phalithirat<br>พระยาอภัยคามินี
| Aphaikhamini
| align="center" |957 – 959
(2 years)
| align="center" |<u>Refounded a Sukhothai polity</u>
|A Mon noble who fled Haripunchai
|-
! align="center" |5
| align="center" |frameless|151x151px
| colspan="2" align="center" |Sri Chanthrathibodi<br>สมเด็จพระอรุณราช
|Anuratcha Kuman
เจ้าอรุณราชกุมาร
| rowspan="4" |Aphaikhamini
| align="center" |late c.900s – 1052
| colspan="2" align="center" |A son of Aphaikhamini
----<u>Offered the throne</u>
|-
! align="center" |7
| align="center" |frameless|100x100px
| align="center" |Suphatcharat
เจ้าพัตตาสุจราช
|Pasuja Kuman
เจ้าพสุจกุมาร
| align="center" |1052 – 1145
| align="center" |Son of Arunarat
| align="center" |Grandfather of Kesariraja, King of Lavo
|-
! align="center" |8
| align="center" |frameless|100x100px
| colspan="2" align="center" |Thammatrailok
พระเจ้าธรรมไตรโลก
| align="center" |1145 – 1155
| align="center" |Son of the Suphatcharat
| align="center" |Father of Ayothaya kings, Thammaracha and Borommaracha
----Father-in-law of Kesariraja
----Grandfather of Uthong V of Ayutthaya
|-
! align="center" |9
| align="center" |frameless|100x100px
| colspan="2" align="center" |Rachathirat
เจ้าราชาธิราช
| align="center" |c.1100s
| align="center" |Son of the Thammatrailok
| align="center" |only ruled in Si Satchanalai
|-
| colspan="8" align="center" |City-state is partitioned into Sukhothai and Si Satchanalai, after this the city was ruled from Si-Satchanalai. Phraek Si Racha took over Sukhothai, and later Si-Satchanalai
|}
Pathomsuriyawong/Guruwamsa dynasty (1155–1219)
{| class="wikitable" style="text-align:center; width:100%;"
! style="background-color:#F0DC82" width="3%" | No.
! style="background-color:#F0DC82" width="4%" | Portrait
! style="background-color:#F0DC82" width="15%" | Regnal name
! style="background-color:#F0DC82" width="15%" | Personal name
! style="background-color:#F0DC82" width="9%" | House
! style="background-color:#F0DC82" width="15%" | Reign
! style="background-color:#F0DC82" width="20%" | Succession
! style="background-color:#F0DC82" width="30%" | Notes
|-
! colspan="8" align="center" |Indaprasthanagara suzerainty era (Phraek Si Racha Polity)
|-
! align="center" |10
| align="center" |frameless|100x100px
| align="center" |Phanom Thale Sri<br>พระพนมทะเลศรี
----Mahesavasatithrathiratchakasat<br>มเหศวสติทราธิราชกษัตริย์
| align="center" |Intharacha
อินทราชา
| Phetchaburi – Viang Chaiprakarn
| align="center" |1155 – 1157
(2 years)
| align="center" |Phra Pathomsuriya Thephanarathai Suwannabophit lineage
----Grandson of Sri Singha
----<u>Conquered Sukhothai</u>
| align="center" |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
----<u>Overthrew Rachathirat</u>
|-
! align="center" |11
| align="center" |frameless|100x100px
| colspan="2" align="center" |Suriyaracha<br>พระเจ้าสุริยราชา
| Suriyaracha
| align="center" |1157 – 1184
(27 years)
| align="center" |Cousin of Phanom Thale Sri
| align="center" |Also king of Kamphaeng Phet
----Descended from the a son of Sri Singha, Suriyawong
|-
! colspan="8" align="center" |De facto independent
|-
! align="center" |12
| align="center" |frameless|100x100px
| align="center" |Chantharacha<br>พระเจ้าจันทราชา
|Chantha Kuman
พระจันทกุมาร
| Suriyaracha
| align="center" |1184 – 1214
(30 years)
| align="center" |Son of the Suriyaracha
| align="center" |Stopped sending tribute to Khmer Empire
----Father of Kamrateng An Sri Inthrabodinthrathit, first independent king of Sukhothai
|-
! align="center" |13
| align="center" |frameless|100x100px
| colspan="2" align="center" |E Daeng Phloeng<br>อีแดงเพลิง
| E Daeng Phloeng
| align="center" |1214 – 1219
(5 years)
| align="center" |Usurper
<u>(not related)</u>
| align="center" |Possibly a Mon, name found in the Wat Si Chum Inscription
----<u>Overthrew Chantharacha</u>
|}
1st Sri Naw Nam Thum dynasty (1219–c.1200s)
{| class="wikitable" style="text-align:center; width:100%;"
! style="background-color:#F0DC82" width="3%" | No.
! style="background-color:#F0DC82" width="4%" | Portrait
! style="background-color:#F0DC82" width="15%" | Regnal name
! style="background-color:#F0DC82" width="15%" | Personal name
! style="background-color:#F0DC82" width="9%" | House
! style="background-color:#F0DC82" width="15%" | Reign
! style="background-color:#F0DC82" width="20%" | Succession
! style="background-color:#F0DC82" width="30%" | Notes
|-
! colspan="8" align="center" |Remerged as city-state of Si Satchanalai–Sukhodaya
|-
! align="center" |14
| align="center" |frameless|100x100px
| colspan="2" align="center" |Sri Naw Nam Thum<br>พ่อขุนศรีนาวนำถุม
| Sri Naw Nam Thum
| align="center" |1219 – c.1200s
| align="center" |Usurper, Noble of Chaliang
----Overthrew E Daeng Phloeng
| align="center" |Noble from Si Satchanalai overthrowing E Daeng Phloeng, also a possible king of Sri Satchanalai
|}
Suphannaphum dynasty (c.1200s)
{| class="wikitable" style="text-align:center; width:100%;"
! style="background-color:#F0DC82" width="3%" | No.
! style="background-color:#F0DC82" width="4%" | Portrait
! style="background-color:#F0DC82" width="15%" | Regnal name
! style="background-color:#F0DC82" width="15%" | Personal name
! style="background-color:#F0DC82" width="9%" | House
! style="background-color:#F0DC82" width="15%" | Reign
! style="background-color:#F0DC82" width="20%" | Succession
! style="background-color:#F0DC82" width="30%" | Notes
|-
! colspan="8" align="center" |period of Suphannaphum dominance
|-
! align="center" |15
| align="center" |frameless|100x100px
| align="center" |Khom Sabat Khlon Lamphong<br>ขอมสบาดโขลญลำพง
| align="center" |Saen Pom<br>ท้าวแสนปม
| Suphannaphum
| align="center" |c.1200s
| align="center" |Usurper
| align="center" |Also king of Suphannaphum
----Grandfather-in-law to Uthong V
----Grandfather to Borommarachathirat I
|}
2nd Sri Naw Nam Thum dynasty (c.1200s–1238)
{| class="wikitable" style="text-align:center; width:100%;"
! style="background-color:#F0DC82" width="3%" | No.
! style="background-color:#F0DC82" width="4%" | Portrait
! style="background-color:#F0DC82" width="15%" | Regnal name
! style="background-color:#F0DC82" width="15%" | Personal name
! style="background-color:#F0DC82" width="9%" | House
! style="background-color:#F0DC82" width="15%" | Reign
! style="background-color:#F0DC82" width="20%" | Succession
! style="background-color:#F0DC82" width="30%" | Notes
|-
! colspan="8" align="center" |As the free city-state of Si Satchanalai–Sukhodaya
|-
! align="center" |16
| align="center" |140x140px
| colspan="2" align="center" |Pha Muang<br>พ่อขุนผาเมือง
| Sri Naw Nam Thum
| align="center" |c.1200s – 1238
(around 5 years)
| align="center" |Son of Sri Naw Nam Thum
----Overthrew Khom Sabat Khlon Lamphong
| align="center" |Friend and ally of Inthrabodinthrathit
----Brother-in-law of Inthrabodinthrathit
|-
! colspan="8" align="center" |Pha Muang abdicated and handed over the throne to Inthrabodinthrathit, continues to reign in Si Satchanalai as a vassal kingdom under Sukhothai
|}
Sukhothai Kingdom (1238–1438)
Tai peoples migrated into mainland Southeast Asia in the 8th–10th centuries. In the years after, Northern Thai groups established mueang that evolved into larger states, such as Ngoenyang. 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. Under Ram Khamhaeng the Great, the initial Thai script was invented and Theravāda Buddhism was established as the state religion.
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.
{| class="wikitable" style="text-align:center; width:100%;"
! style="background-color:#F0DC82" width=4% | No.
! style="background-color:#F0DC82" width=4% | Portrait
! style="background-color:#F0DC82" width=10% | Regnal name
! style="background-color:#F0DC82" width="10%" | Ceremonial Name
! style="background-color:#F0DC82" width="10%" | Personal name
!style="background-color:#F0DC82"width="10%" | Spouse
! style="background-color:#F0DC82" width="4%" | House
! style="background-color:#F0DC82" width="10%" | Life Details
! style="background-color:#F0DC82" width=15% | Succession
! style="background-color:#F0DC82" width=15% | Notes
! style="background-color:#F0DC82" width=4% | Viceroy
|-
! align="center" |1
| 100px
| colspan="2" | Inthrabodinthrathit<br>กมรเตงอัญศรีอินทรบดินทราทิตย์
| Si Inthrathit<br>พ่อขุนศรีอินทราทิตย์
----Bang Klang Hao<br>ขุนบางกลางหาว
|Queen
Seuang
| rowspan="2" |Suriyaracha
| born
1188
----reigned
1238–1270
<small></small>
----death
1270
<small></small>
| First King of Sukhothai
----Son of Chantharacha
----Descendant of Phra Pathomsuriya Thephanarathai Suwannabophit
----Founded a new Dynasty
| Ruled locally in the Khmer Empire as Bang Klang Hao. His rebellion led to the establishment of Sukhothai, the first Central Thai kingdom
|Vacant
|-
! align="center" |2
| 100px
| colspan="2" |Ban Mueang<br>ขุนบานเมือง
|Ban
บาน
|no known queen
| born
1237
----reigned
1270–1279
<small></small>
----death
1279
<small></small>
|Son of Si Inthrathit
| Namesake for birth name of Maha Thammaracha IV
|100px
----Ram<br>(brother)
|-
! align="center" |3
| 100px
| colspan="2" | Rammarat the Great, the Bold<br>พระบาทกมรเตงอัญศรีรามราช
| Ram Khamhaeng the Great<br>พ่อขุนรามคำแหงมหาราช
|no known queen
| rowspan="3" |Ram Khamhaeng
| born
1237/1247
----reigned
1279–1298
<small></small>
----death
1298
<small></small>
| Son of Si Inthrathit
| Oversaw the height of Sukhothai prosperity, the development of the Thai script, and the propagation of Theravada Buddhism within Sukhothai His reign saw the decline of Sukhothai, as regions conquered by Ram Khamhaeng broke away
|100px
----Li Thai<br>(son)
|-
! align="center" |5
| frameless|100x100px
| colspan="3" |Ngua Nam Thum<br>พระยางั่วนำถุม
|no queen
| rowspan="2" |Si Inthrathit
| born
1266
----reigned
1323–1347
<small></small>
----death
1347
<small></small>
| Son of Ban Mueang
| Brother of Burmese queen consort May Hnin Htapi. Origin of his name is disputed
|100px
----Li Thai<br>(nephew)
|-
! align="center" |—
|frameless|100x100px
| colspan="3" |name unknown
|no queen
|born
unknown
----reigned
1347
----death
unknown
|Son of Ngua Nam Thum
|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".
| rowspan="2" |Vacant
|-
! align="center" |6
| 100px
| Maha Thammaracha I<br>พระมหาธรรมราชาที่ ๑
|Phrabat Kamrateng An Sri Suriyaphong Ram Maha Thammarachathirat<br>พระบาทกมรเตงอัญศรีสุริยพงษ์รามมหาธรรมราชาธิราช
| Li Thai<br>พระยาลิไทย
----Luethai
ฦๅไทย
|Queen
Si Thammaratmada
| Ram Khamhaeng
| born
1300
----reigned
1347–1368
<small></small>
----death
1368
<small></small>
| Son of Loe Thai
----Overthrew son of Ngua Nam Thum
| Known for his devotion to Buddhist philosophy and writing. During his reign, Ayutthaya began to invade into Sukhothai Upon his death, King Borommarachathirat II of Ayutthaya installed his son as uparaja, ending the Phra Ruang succession 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.
1st Uthong dynasty (1351–1370)
{| class="wikitable" style="text-align:center; width:100%;"
! style="background-color:#F0DC82" width=3% | No.
! style="background-color:#F0DC82" width=4% | Portrait
! style="background-color:#F0DC82" width=15% | Regnal name
! style="background-color:#F0DC82" width=15%| Ceremonial Name
! style="background-color:#F0DC82" width="15%" | Personal name
! style="background-color:#F0DC82" width="4%" | House
! style="background-color:#F0DC82" width="10%" | Life Details
! style="background-color:#F0DC82" width=20% | Succession
|-
! colspan="8" align="center" |Uthong V inherits all Dvaravati polity: Phripphri, Suphannaphum, Ayothaya, and Lavo
<u>bestowed with new titles</u>
|-
! align="center" |1
| 100px
| Ramathibodi I of Lavo-Ayutthaya<br>สมเด็จพระรามาธิบดีที่ ๑
----Uthong V of Suphannaphum-Phripphri<br>พระเจ้าอู่ทองที่ ๕
|Somdet Phra Ramathibodi Sitsunthon Borommapophit Phra Phutthachao Yuhua
สมเด็จพระรามาธิบดีศรีสุนทรบรมบพิตรพระพุทธเจ้าอยู่หัว
| Worachetha Kuman<br>วรเชษฐกุมาร
| rowspan="2" |Aphaikhamini
|born
3 April 1314
----reigned
1351–1369
<small></small>
----death
1369
<small></small>
| 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
----began his reign on
4 March 1351
|-
! align="center" |2
| 100px
| colspan="3" |Ramesuan I<br>สมเด็จพระราเมศวร ที่ ๑
| born
1339
----reigned
1369–1370
<small>abdicated <1yr</small>
----death
1395
<small></small>
|<u>Former King of Lavo</u>
----Son of Ramathibodi I
----First Reign
|}
1st Suphannaphum dynasty (1370–1388)
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.
{| class="wikitable" style="text-align:center; width:90%;"
! colspan="4" |Suphannaphum Governor Seat
|-
! Regnal name
! Reign from
! Reign until
! Notes
|-
| Uthong I
| 1163
| 1205
|
|-
| Uthong II
| 1205
| Unknown
|
|-
| ||Unknown||Mid-13th-C.
|-
|
|colspan=2|Unknown (Mid to late 13th century)
|
|-
| Uthong III
| Unknown
| 1335
|
|-
| Uthong IV
| 1335
| 1351
|
|-
| Pha Ngua
| 1351
| 1370
|
|-
| Sri Thephahurat
| 1370
| 1374
|
|-
| Nakhon In
| 1374
| 1408
|
|-
| Ai Phaya
| 1408
| 1424
|
|-
| colspan="4" style="background: #E0FFFF;" |Suphannaphum merged into the Ayutthayan crown
|}
{| class="wikitable" style="text-align:center; width:100%;"
! style="background-color:#F0DC82" width=3% | No.
! style="background-color:#F0DC82" width=4% | Portrait
! style="background-color:#F0DC82" width=15% | Regnal name
! style="background-color:#F0DC82" width=15%| Ceremonial Name
! style="background-color:#F0DC82" width="15%" | Personal name
! style="background-color:#F0DC82" width="4%" | House
! style="background-color:#F0DC82" width="10%" | Life Details
! style="background-color:#F0DC82" width=20% | Succession
|-
! align="center" |3
| 100px
| colspan="2" | Borommarachathirat I<br>สมเด็จพระบรมราชาธิราชที่ ๑
|Pha Ngua<br>ขุนหลวงพะงั่ว
| rowspan="2" |Pha Ngua
| born
1310
----reigned
1370–1388
<small></small>
----death
1388
<small></small>
|<u>Former king of Suphannaphum</u>
----Descendant of Suphannaphum Kingdom's Royals
----Son of Boromracha of Suphannaphum
----Son-in-law of Boromracha of Lavo
----Overthrew Ramesuan
|-
! align="center" |4
| frameless|100x100px
| colspan="3" |Thong Lan<br>สมเด็จพระเจ้าทองลัน
| born
1374
----reigned
1388
<small>7 days</small>
----death
1388
<small></small>
|Son of Borommarachathirat I
|}
2nd Uthong dynasty (1388–1409)
{| class="wikitable" style="text-align:center; width:100%;"
! style="background-color:#F0DC82" width=3% | No.
! style="background-color:#F0DC82" width=4% | Portrait
! style="background-color:#F0DC82" width=15% | Regnal name
! style="background-color:#F0DC82" width=15%| Ceremonial Name
! style="background-color:#F0DC82" width="15%" | Personal name
! style="background-color:#F0DC82" width="4%" | House
! style="background-color:#F0DC82" width="10%" | Life Details
! style="background-color:#F0DC82" width=20% | Succession
|-
! align="center" |(2)
| 100px
| colspan="3" |Ramesuan I<br>สมเด็จพระราเมศวร ที่ ๑
| rowspan="2" |Aphaikhamini
| born
1339
----reigned
1388–1395
<small></small>
----death
1395
<small></small>
|Second Reign
----Son of Ramathibodi I
----Overthrew Thong Lan
|-
! align="center" |5
| frameless|100x100px
| colspan="2" | Ramrachathirat<br>สมเด็จพระรามราชาธิราช
|Ram Chao<br>สมเด็จพญารามเจ้า
| born
1356
----reigned
1395–1405
<small></small>
----death
unknown
<small>unknown</small>
|Son of Ramesuan
|}
2nd Suphannaphum dynasty (1409–1569)
{| class="wikitable" style="text-align:center; width:100%;"
! style="background-color:#F0DC82" width=3% | No.
! style="background-color:#F0DC82" width=4% | Portrait
! style="background-color:#F0DC82" width=15% | Regnal name
! style="background-color:#F0DC82" width=15%| Ceremonial Name
! style="background-color:#F0DC82" width="15%" | Personal name
! style="background-color:#F0DC82" width="10%"| Spouse
! style="background-color:#F0DC82" width="4%" | House
! style="background-color:#F0DC82" width="10%" | Life Details
! style="background-color:#F0DC82" width=20% | Succession
! style="background-color:#F0DC82" width=4% | Viceroy
|-
! align="center" |6
| 100px
| colspan="2" | Nakhon Intharachathirat<br>สมเด็จพระนครอินทราชาธิราช
| Nakhon In<br>เจ้านครอินทร์
|Queen
a princess of Sukhothai
|Nakhon In
|born
1359
----reigned
1409–1424
<small></small>
----death
1424
<small></small>
| colspan="2" |<u>Former king of Suphannaphum</u>
----Son of Borommarachathirat I
----Grandson of Loe Thai
----Descendant of Phra Pathomsuriya Thephanarathai Suwannabophit
----Overthrew Ramrachathirat
|-
| colspan="10" align="center" style="background-color:#FFc0cb" |Sukhothai merged into the Ayutthayan crown
|-
! align="center" |7
| frameless|100x100px
| colspan="2" | Borommarachathirat II<br>สมเด็จพระบรมราชาธิราชที่ ๒
| Sam Phraya<br>เจ้าสามพระยา
|Queen
a princess of Sukhothai
|Nakhon In
|born
1386
----reigned
1424–1448
<small></small>
----death
1448
<small></small>
| Son of Nakhon Intharachathirat
----Grandson of Maha Thammaracha I
----<u>Succession War, won by not participating</u>
| 100px<br>
----Ramesuan<br>(son)
|-
| colspan="10" align="center" |<u>Transformation of a confederational system into a feudal mandala system</u>
|-
! align="center" |8
| frameless|100x100px
| Borommatrailokkanat<br>สมเด็จพระบรมไตรโลกนาถ
|Somdet Phra Ramathibodi Borommatrailokkanat Mahamongkut Thepphayamanut Borisut Suriyawong Ong Phutthangkun Borommapophit
สมเด็จพระรามาธิบดีบรมไตรโลกนาถ มหามงกุฎเทพยมนุษย์ บริสุทธิสุริยวงศ์ องค์พุทธางกูรบรมบพิตร
| Ramesuan II<br>พระราเมศวร ที่ ๒
|no Queen
| rowspan="2" |Nakhon In
|born
1431
----reigned
1448–1488
<small></small>
----death
1488
<small></small>
| <u>Former Viceroy of Sukhothai</u>
----Son of Borommarachathirat II
----Grandson of Maha Thammaracha II
| rowspan="2" | 100px<br>
----Chettha<br>(son&brother)
|-
! align="center" |9
| frameless|100x100px
| colspan="2" | Borommarachathirat III<br>สมเด็จพระบรมราชาธิราชที่ ๓
| Borommaracha<br>พระบรมราชา
|no Queen
|born
1462
----reigned
1488–1491
<small></small>
----death
1491
<small></small>
| Son of Borommatrailokkanat
----Great-Grandson of Maha Thammaracha II
|-
! align="center" |10
| frameless|100x100px
| colspan="2" | Ramathibodi II<br>สมเด็จพระรามาธิบดีที่ ๒
| Chetthathirat I <br>พระเชษฐาธิราชที่ ๑
|Queen
a princess of Sukhothai
| rowspan="3" |Chettha
|born
1473
----reigned
1491–1529
<small></small>
----death
1529
<small></small>
| <u>Former Viceroy of Sukhothai</u>
----Son of Borommatrailokkanat
----Great-Grandson of Maha Thammaracha II
| 100px
----Athittayawong<br>(son)
|-
! align="center" |11
| frameless|100x100px
| colspan="2" | Borommarachathirat IV<br>สมเด็จพระบรมราชาธิราชที่ ๔
| Athittayawong<br>พระอาทิตยวงศ์
|Queen
a princess of Sukhothai
|born
1488
----reigned
1529–1533
<small></small>
----death
1533
<small></small>
| <u>Former Viceroy of Sukhothai</u>
----Son of Ramathibodi II
| 100px<br>
----Chairacha<br>(brother)
|-
! align="center" |12
| frameless|100x100px
| colspan="2" |Ratsadathirat the young<br>สมเด็จพระรัษฎาธิราช
|Ratthathiratkuman
รัฏฐาธิราชกุมาร
|no Queen
|born
1529
----reigned
1533
<small>5 months</small>
----death
1533
<small></small>
| Son of Borommarachathirat IV
----(under a regency)
| rowspan="3" |Vacant
|-
! align="center" |13
| frameless|100x100px
| colspan="3" |Chairachathirat<br>สมเด็จพระไชยราชาธิราช
|Supreme Queen
Chitrawadi
----Queen of the Left
Si Sudachan
| rowspan="2" |Chairacha
|born
1499
----reigned
1533–1546
<small></small>
----death
1546
<small></small>
|It is possile that he converted to Roman Catholicism and taking the name: Dom João. Though there are no document saying directly, only saying that maybe he converted.
----Younger Brother of Borommarachathirat IV
----Overthrew Ratsadathirat
|-
! align="center" |14
| frameless|138x138px
| colspan="3" | Yotfa<br>สมเด็จพระยอดฟ้า
|no Queen
| born
1535
----reigned
1546–1548
<small></small>
----death
1548
<small></small>
| Son of Chairachathirat
|-
! align="center" |—
| frameless|100x100px
| colspan="2" | Worawongsathirat<br>ขุนวรวงศาธิราช
| Bunsi<br>บุญศรี
|Queen
Si Sudachan
| Bunsi
|born
1503
----reigned
1548
<small>5 months</small>
----death
1549
<small></small>
| <u>Count of Ayutthaya</u>
----Step-father of Yotfa
----Overthrew Yotfa
| 100px<br>
----Chan<br>(brother)
|-
! rowspan="2" align="center" |15
| rowspan="2" | frameless|100x100px
| rowspan="2" | Maha Chakkraphat the White Elephant<br>สมเด็จพระมหาจักรพรรดิ
| rowspan="2" |Somdet Phra Mahachakkraphat Rachathirat Ramintharathibodintharachen Suriyentharasodomara Chaisawanthipat
สมเด็จพระมหาจักรพรรดิราชาธิราช รามินทรธิบดินทราเชน สุริเยนทรยโสดมราไชสวรรยาธิปัต
| rowspan="2" | Chang Pheuak<br>พระเจ้าช้างเผือก
----Thianracha<br>พระเทียรราชา
| rowspan="2" |Queen
Si Suriyothai
| rowspan="3" | Thianracha
| rowspan="2" |born
1509
----reigned
1548–1564
<small></small>
1568–1569
<small></small>
----death
1569
<small></small>
| Younger Brother of Borommarachathirat IV and Chairachathirat
----Overthrew Worawongsathirat
----Abdicated and Entered Monkhood (1564–1568)
| 100px<br>
----Ramesuan<br>(son)
|-
|De facto second reign as co-king, installed by Mahinthrathirat
| 100px<br>
----Mahin<br>(son)
|-
! align="center" |16
| frameless|100x100px
| colspan="3" |Mahinthrathirat<br>สมเด็จพระมหินทราธิราช
|no Queen
| born
1539
----reigned
1564–1569
<small></small>
----death
1569
<small></small>
| Son of Maha Chakkraphat and Suriyothai
| Vacant
|-
| colspan="10" style="background-color:#FFC0CB" |First Fall of Ayutthaya
|}
Sukhothai dynasty (1569–1629)
{| width=100% class="wikitable" style="text-align:center
! style="background-color:#F0DC82" width=3% | No.
! style="background-color:#F0DC82" width=4% | Portrait
! style="background-color:#F0DC82" width=15% | Regnal name
! style="background-color:#F0DC82" width=15%| Ceremonial Name
! style="background-color:#F0DC82" width="15%" | Personal name
! style="background-color:#F0DC82" width="10%"| Spouse
! style="background-color:#F0DC82" width="4%" | House
! style="background-color:#F0DC82" width="10%" | Life Details
! style="background-color:#F0DC82" width=20% | Succession
! style="background-color:#F0DC82" width=4% | Viceroy
|-
| colspan="10" align="center" style="background-color:#FFC0CB" |Vassal of the First Toungoo Empire (1569–1584)
|-
! align="center" |17
| align="center" |frameless|100x100px
| align="center" |Sanphet I<br>สมเด็จพระสรรเพชญ์ที่ ๑
(Name given by
Bayinnaung - Toungoo Emperor )
----Maha Thammarachathirat I<br>สมเด็จพระมหาธรรมราชาธิราชที่ ๑
|Somdet Phra Chao Sanphet Wong Kurasuriyakhodom Borommarachathirat Rames Pariwet Thammikarat Dechochai Phromthepadi Thep Naru Badin Phuminthra Thep Sommot Ratcha Borommaphopit Phra Phuttha Chao Yu Hua
สมเด็จพระเจ้าสรรเพชญวงศ์กุรสุริโคดม บรมราชาธิราชราเมศ ปริเวทธรรมิกราช เดโชชัย พรหมเทพาดิเทพนฤบดินทร์ ภูมิทรเทพสมมติราชบรมบพิตรพระพุทธเจ้าอยู่หัว
| align="center" |Phirenthorathep
ขุนพิเรนเทพ
----Maha Thammaracha V<br>สมเด็จพระมหาธรรมราชาที่ ๕
(Name given by King Maha Chakkraphat)
|Supreme Queen
Wisutkasat
| Maha Thammaracha
|born
1517
----reigned
1569–1590
<small></small>
----death
1590
<small></small>
| <u>Former Viceroy of Phitsanulok-Sukhothai and the Northern Territories</u>
----Descendant of the Phra Ruang Dynasty of Sukhothai
----Son-in-law of Maha Chakkraphat
----Installed by Bayinnaung of Toungoo Empire
| align="center" |100px<br>
----Naresuan<br>(son)
|-
| colspan="10" align="center" style="background: #E0FFFF;" |Independence from the First Toungoo Empire, 1584
|-
! align="center" |18
| align="center" |100px
| align="center" |Sanphet II the Great<br> สมเด็จพระสรรเพชญ์ที่ ๒
|Somdej Boromabatbongkot Laksana Akaburisodboromnhonra Chaofah Naret Chetthathibodi
สมเดจ์บรมบาทบงกชลักษณอัคบุริโสดมบรมหน่อนราเจ้าฟ้านเรศเชษฐาธิบดี
| align="center" | Naresuan the Great<br>สมเด็จพระนเรศวรมหาราช
|Supreme Queen
Montri Rattana
----Queen
Yodaya Mibaya
----Queen
Ekkasatri
| Maha Thammaracha
|born
1555
----reigned
1590–1605
<small></small>
----death
1605
<small></small>
| Son of Sanphet I
| align="center" |100px<br>
----Ekathotsarot<br>(brother)
|-
! align="center" |19
| align="center" |100px
| align="center" |Sanphet III the White Prince<br>สมเด็จพระสรรเพชญ์ที่ ๓
|Phra Si Sanphet Somdet Borommarachathirat Ramathibodi Si Sinthon Mahachakkraphatson Bowon Ratchathipbodin Tharininthrathirat etc. etc.
พระศรีสรรเพชญ์ สมเด็จบรมราชาธิราชรามาธิบดี ศรีสินทรมหาจักรพรรดิสร บวรราชาธิบดินทร์ ธรณินทราธิราชฯ
| align="center" | Ekathotsarot<br>สมเด็จพระเอกาทศรถ
|no Queen
| rowspan="2" |Ekathotsarot
|born
1557
----reigned
1605–1610
<small></small>
----death
1610
<small></small>
| Son of Sanphet I
| align="center" |100px<br>
----Suthat<br>(son)
|-
! align="center" |20
| align="center" |frameless|100x100px
| colspan="2" align="center" |Sanphet IV<br>สมเด็จพระสรรเพชญ์ที่ ๔
| align="center" |Si Saowaphak<br>สมเด็จพระศรีเสาวภาคย์
|no Queen
|born
1585
----reigned
1610–1611
<small></small>
----death
1611
<small></small>
| Son of Sanphet III
| align="center" |Vacant
|-
! align="center" |21
| align="center" |100px
| align="center" |Borommaracha I the Pious<br>สมเด็จพระบรมราชาที่ ๑
|Somdet Phra Phutthachao Yuhua Songtham An Maha Prasert
สมเด็จพระพุทธเจ้าอยู่หัวทรงธรรมอันมหาประเสริฐ
| align="center" |Songtham<br>สมเด็จพระเจ้าทรงธรรม
|Queen
Chantharacha
----Queen
Khattiyathewi
| rowspan="3" |Songtham
|born
1590
----reigned
1611–1628
<small></small>
----death
1628
<small></small>
| Son of Sanphet III
----<u>Next in line after the murder of Sanphet IV</u>
| align="center" |100px<br>
----Si Sorarak<br>(son)
|-
! align="center" |22
| align="center" |frameless|100x100px
| colspan="2" align="center" |Borommaracha II the young<br>สมเด็จพระบรมราชาที่ ๒
| align="center" |Chetthathirat II<br>สมเด็จพระเชษฐาธิราชที่ ๒
|no Queen
|born
1613
----reigned
1628–1629
<small></small>
----death
1629
<small></small>
| Son of Borommaracha I
| rowspan="2" align="center" |Vacant
|-
! align="center" |23
| align="center" |frameless|100x100px
| colspan="3" align="center" |Athittayawong<br>สมเด็จพระอาทิตยวงศ์
|no Queen
| align="center" |born
1620
----reigned
1629
<small>36 days</small>
----death
1637
<small></small>
| Son of Borommaracha I
----Overthrew Borommaracha II, helped by Sanphet V
|}
Prasat Thong dynasty (1629–1688)
{| width=100% class="wikitable" style="text-align:center
! style="background-color:#F0DC82" width=3% | No.
! style="background-color:#F0DC82" width=4% | Portrait
! style="background-color:#F0DC82" width=15% | Regnal name
! style="background-color:#F0DC82" width=15%| Ceremonial Name
! style="background-color:#F0DC82" width="15%" | Personal name
! style="background-color:#F0DC82" width="10%"| Spouse
! style="background-color:#F0DC82" width="4%" | House
! style="background-color:#F0DC82" width="10%" | Life Details
! style="background-color:#F0DC82" width=20% | Succession
! style="background-color:#F0DC82" width=4% | Viceroy
|-
! align="center" |24
| align="center" |100px
| align="center" |Sanphet V<br>สมเด็จพระสรรเพชญ์ที่ ๕
|Somdet Phra Ekathotsarot Isuan Borommanat Borombophit
สมเด็จพระเอกาทศรถอิศวรบรมนาถบรมบพิตร
| align="center" |Prasat Thong<br>สมเด็จพระเจ้าปราสาททอง
|Supreme Queen
<u>none</u>
----Queen of The Left
- Pathumathewi
- Suriya
- Chanthathewi
- Sirikanlaya
----Queen of the Right
- Ubonthewi
- Naphathewi
- Onbutri
- Kanithathewi
| rowspan="2" |Prasat Thong
|born
1599
----reigned
1629–1655
<small></small>
----death
1655
<small></small>
| <u>Former Defence Minister and Marquess of Ayutthaya</u>
----Son-in-law of Borommaracha I
----unclear origins: maternal cousin of Borommaracha I
or illegitimate son of Sanphet III
----Overthrew Athittayawong
| rowspan="2" align="center" |Vacant
|-
! align="center" |25
| align="center" |frameless|100x100px
| colspan="2" align="center" | Sanphet VI<br>สมเด็จพระสรรเพชญ์ที่ ๖
| align="center" |Chai<br>สมเด็จเจ้าฟ้าไชย
|no Queen
|born
1630
----reigned
1655–1656
<small></small>
----death
1656
<small></small>
| Son of Sanphet V
|-
! align="center" |26
| align="center" |frameless|100x100px
| colspan="2" align="center" |Sanphet VII<br>สมเด็จพระสรรเพชญ์ที่ ๗
| align="center" |Si Suthammaracha<br>สมเด็จพระศรีสุธรรมราชาธ
|no Queen
| Suthammaracha
|born
1600
----reigned
1656
<small>2 months</small>
----death
1656
<small></small>
| Brother of Sanphet V
----Overthrew Sanphet VI
| align="center" |100px<br>
----Narai<br>(nephew)
|-
! align="center" |27
| align="center" |100px
| align="center" |Ramathibodi III the Great<br>สมเด็จพระรามาธิบดีที่ ๓
|Somdet Phra Borommarachathirat Ramathibodi Sisanphet Borommanahachakkraphatdisuan Rachathirat Ramesuanthon Tharathibodi etc. etc.
สมเด็จพระบรมราชาธิราชรามาธิบดี ศรีสรรเพชญ์บรมมหาจักรพรรดิศวร ราชาธิราชราเมศวรธรธราธิบดีฯ
| align="center" | Narai the Great<br>สมเด็จพระนารายณ์มหาราช
|Supreme Queen
Kasattri
| Narai
|born
1632
----reigned
1656–1688
<small></small>
----death
1688
<small></small>
| Son of Sanphet V
----Overthrew Sanphet VII
| align="center" |Vacant
|}
Ban Phlu Luang dynasty (1688–1767)
{| width=100% class="wikitable" style="text-align:center
! style="background-color:#F0DC82" width=3% | No.
! style="background-color:#F0DC82" width=4% | Portrait
! style="background-color:#F0DC82" width=15% | Regnal name
! style="background-color:#F0DC82" width=15%| Ceremonial Name
! style="background-color:#F0DC82" width="15%" | Personal name
! style="background-color:#F0DC82" width="10%"| Spouse
! style="background-color:#F0DC82" width="4%" | House
! style="background-color:#F0DC82" width="10%" | Life Details
! style="background-color:#F0DC82" width=20% | Succession
! style="background-color:#F0DC82" width=4% | Viceroy
|-
! align="center" |28
| align="center" |100px
| align="center" |Phetracha the Wise <br>สมเด็จพระเพทราชา
|Somdet Phra Mahaburut Wisutthidet Udom<br>สมเด็จพระมหาบุรุษวิสุทธิเดชอุดม
| align="center" |Thadathibet
สมเด็จพระธาดาธิเบศร์
---- Songtham II
พระทรงธรรมที่ ๒<br>สมเด็จพระบรมราชาที่ ๓
|Somdet Phra Thinang Suriyat Amarin<br>สมเด็จพระที่นั่งสุริยาศน์อมรินทร์
| align="center" |Ekkathat<br>สมเด็จพระเจ้าเอกทัศ
|Supreme Queen
Wimonphat
| align="center" |born
1718
----reigned
1758–1767
<small></small>
----death
1767
<small></small>
| Son of Maha Thammarachathirat II
----Overthrew Maha Thammarachathirat III
|-
| colspan="10" align="center" style="background-color:#FFC0CB" |Second Fall of Ayutthaya
|}
Thonburi Kingdom (1767–1782)
Thonburi dynasty (1767–1782)
{| width=100% class="wikitable" style="text-align:center
! style="background-color:#F0DC82" width=3% | No.
! style="background-color:#F0DC82" width=4% | Portrait
! style="background-color:#F0DC82" width=15% | Regnal name
! style="background-color:#F0DC82" width=15%| Ceremonial Name
! style="background-color:#F0DC82" width="15%" | Personal name
! style="background-color:#F0DC82" width="10%"| Spouse
! style="background-color:#F0DC82" width="4%" | House
! style="background-color:#F0DC82" width="10%" | Life Details
! style="background-color:#F0DC82" width=20% | Succession
! style="background-color:#F0DC82" width=4% | Viceroy
|-
! align="center" |1
| align="center" |100px
| align="center" |Sanphet X the Great<br>สมเด็จพระสรรเพชญ์ที่ ๑๐
----Borommaracha IV the Great<br>สมเด็จพระบรมราชาที่ ๔
|Phra Si Sanphet Somdet Borommathammikarat Thirat Ramathibodi etc. etc.
พระศรีสรรเพชร สมเด็จบรมธรรมิกราชาธิราช รามาธิบดี ฯ
| align="center" |Taksin the Great<br>สมเด็จพระเจ้าตากสินมหาราช
----鄭昭
(Zhèng Zhāo / Dên<sup>7</sup> Zieu<sup>1</sup>)
|Supreme Queen
Batboricha
----Queen of The Left
Si Sudarak
| Taksin
|align="center" |born
17 April 1734
----reigned
1767–1782
<small></small>
----death
7 April 1782
<small></small>
| <u>Former Marquess of Tak</u>
----Son-in-law of Rama I
----<u>Reunited Ayutthaya, refounding it as Thonburi</u>
| align="center" |100px<br>
----Inthraphithak<br>(son)
|}
Rattanakosin Kingdom (1782–present)
Chakri dynasty (1782–present)
{| width=100% class="wikitable" style="text-align:center
! style="background-color:#F0DC82" width=3% | No.
! style="background-color:#F0DC82" width=4% | Portrait
! style="background-color:#F0DC82" width=15% | Regnal name
! style="background-color:#F0DC82" width=15%| Ceremonial Name
! style="background-color:#F0DC82" width="15%" | Personal name
! style="background-color:#F0DC82" width="10%"| Spouse
! style="background-color:#F0DC82" width="4%" | House
! style="background-color:#F0DC82" width="10%" | Life Details
! style="background-color:#F0DC82" width=10% | Coronation
! style="background-color:#F0DC82" width=20% | Succession
! style="background-color:#F0DC82" width=4% | Viceroy
|-
! rowspan="2" align="center" |1
| rowspan="2" align="center" |100x100px
100px
| rowspan="2" align="center" |Ramathibodi IV the Great<br>สมเด็จพระรามาธิบดีที่ ๔<br>(name originally taken)
----Phutthayotfa Chulalok
พระพุทธยอดฟ้าจุฬาโลก
----Rama I the Great<br>พระรามที่ ๑ (รัชกาลที่ ๑)<br>(retroactively given)
100x100px
| rowspan="2" align="center" |Phra Bat Somdet Phra Borommarachathirat Ramathibodi Si Sinthra Borommaha Chakkraphat Ratchathipbodin etc. etc.
พระบาทสมเด็จพระบรมราชาธิราชรามาธิบดี ศรีสินทรบรมมหาจักรพรรดิราชาธิบดินทร์ฯ
----Phrabat Somdet Phra Paramoruracha Maha Chakri Boromanat Phra Phutthayotfa Chulalok the Great<br>พระบาทสมเด็จพระปรโมรุราชามหาจักรีบรมนารถ พระพุทธยอดฟ้าจุฬาโลกมหาราช<br>(posthumously by Rama III)
----Somdet Chao Phraya Maha Kasatseuk<br>สมเด็จเจ้าพระยามหากษัตริย์ศึก
| rowspan="2" |Thong Duang
ทองด้วง
| rowspan="2" |Supreme Queen
Amarindra
| rowspan="4" |Chakri
| rowspan="2" align="center" |born
20 March 1737
----reigned
1782–1809
<small></small>
----death
7 September 1809
<small></small>
| rowspan="2" align="center" |1st Coronation
10 June 1782
----2nd Coronation<br>17 June 1785
| rowspan="2" |<u>Former Prime Minister & Grand Duke of Thonburi</u>
----Father-in-law of Borommaracha IV
----Descendant of Duke Kosa Pan, grandson of Sanphet III
----Overthrew Borommaracha IV
| align="center" |100px<br>
----Maha Sura Singhanat<br>(brother)
|-
| align="center"|100px<br>
----Itsarasunthon<br>(son)
|-
! align="center" |2
| align="center" |100x100px
100px
| align="center" |Ramathibodi V<br>สมเด็จพระรามาธิบดีที่ ๕<br>(name originally taken)
----Thammikkaracha II
พระบาทสมเด็จพระบรมธรรมิกราชาที่ ๒
(alternate name originally taken)
----Phutthaloetla Naphalai
พระพุทธเลิศหล้านภาลัย
----Rama II<br>พระรามที่ ๒ (รัชกาลที่ ๒)<br>(retroactively given)
100x100px
| align="center" |Phra Bat Somdet Phra Borom Rachathirat Ramathibodi Sri Sinthra Borom Maha Chakraphat Rachathibodin etc. etc.
พระบาทสมเด็จพระบรมราชาธิราชรามาธิบดี ศรีสินทรบรมมหาจักรพรรดิ
ราชาธิบดินทร์ฯ
----Phrabat Somdet Phra Boromratchapongchet Maha Itsarasunthon Phra Phutthaloetla Naphalai<br>พระบาทสมเด็จพระบรมราชพงษเชษฐมเหศวรสุนทร พระพุทธเลิศหล้านภาลัย<br>(posthumously by Rama III)
|Chim
ฉิม
|Supreme Queen
Si Suriyendra
----Supreme Consort
Kunthon Thipphayawadi
| align="center" |born
24 February 1767
----reigned
1809–1824
<small></small>
----death
21 July 1824
<small></small>
| align="center" |Coronation
17 September 1809
| Son of Rama I
| align="center" |100px<br>
----Maha Senanurak<br>(brother)
|-
! align="center" |3
| align="center" |100x100px
100px
| align="center" |Ramathibodi VI<br>สมเด็จพระรามาธิบดีที่ ๖<br>(name originally taken)
---- Chetsadarat<br>พระมหาเจษฎาราชเจ้า<br>(retroactively given by Rama IV
----Nangklao
พระนั่งเกล้าเจ้าอยู่หัว
----Rama III<br>พระรามที่ ๓ (รัชกาลที่ ๓)<br>(retroactively given by Rama VI)
<br>97x97px
| align="center" |Phra Bat Somdet Phra Borommarachathirat Ramathibodi Si Sinthra Borommaha Chakkraphat Ratchathipbodin etc. etc.
พระบาทสมเด็จพระบรมราชาธิราชรามาธิบดี ศรีสินทรบรมมหาจักรพรรดิราชาธิบดินทร์ฯ
----Phrabat Somdet Phra Paramathiworaset Maha Chetsadabodin Phra Nangklao Chao Yu Hua<br>พระบาทสมเด็จพระปรมาธิวรเสรฐมหาเจษฎาบดินทรฯ พระนั่งเกล้าเจ้าอยู่หัว<br>(posthumously by Rama IV)
----Phra Maha Chetsadarat Chao<br>พระมหาเจษฎาราชเจ้า
| Thap
ทับ
|no Queen
| align="center" |born
31 March 1788
----reigned
1824–1851
<small></small>
----death
2 April 1851
<small></small>
| align="center" |Coronation
1 August 1824
|
| align="center" |100px<br>
----Sakdiphonlasep(uncle)
|-
! align="center" |4
| align="center" |100x100px
134x134px
| align="center" |Chomklao
พระจอมเกล้าเจ้าอยู่หัว
----Rama IV<br>พระรามที่ ๔ (รัชกาลที่ ๔)<br>(retroactively given)
<br>100x100px
| align="center" |Phrabat Somdet Phra Poramenthra Ramathibodhi Srisindra Maha <u>Mongkut</u> Phra Chomklao Chao Yu Hua<br>พระบาทสมเด็จพระปรเมนทรรามาธิบดีศรีสินทรมหามงกุฎ พระจอมเกล้าเจ้าอยู่หัว
----Phra Sayam Thewa Maha Makut Witthaya the Great<br>พระสยามเทวมหามกุฏวิทยมหาราช
|Mongkut
มงกุฎ
----Yai
ใหญ่
|Supreme Queen
Somanass Waddhanawathy
----Queen
Debsirindra
----Supreme Consort
Phannarai
|Mongkut
| align="center" |born
18 October 1804
----reigned
1851–1868
<small></small>
----death
1 October 1868
<small></small>
| align="center" |Coronation
15 May 1851
|
| align="center" |100px<br>
----Pinklao<br>(brother)
|-
| colspan="11" align="center" |<u>Transformation of a feudal mandala system into a absolute monarchical system</u>
|-
! rowspan="2" align="center" |5
| rowspan="2" align="center" |100x100px
151x151px
| rowspan="2" align="center" |Chulachomklao
พระจุลจอมเกล้าเจ้าอยู่หัว
----Rama V the Great<br>พระรามที่ ๕ (รัชกาลที่ ๕)<br>(retroactively given)
<br>100x100px
| rowspan="2" align="center" |Phrabat Somdet Phra Poraminthra Maha Chulalongkorn Phra Chulachomklao Chao Yu Hua<br>พระบาทสมเด็จพระปรมินทรมหาจุฬาลงกรณ์ฯ พระจุลจอมเกล้าเจ้าอยู่หัว
----Phra Piya the Great<br>พระปิยมหาราช<br>(his full name is 979 characters long)
| rowspan="2" |Chulalongkorn
จุฬาลงกรณ์
| rowspan="2" |Supreme Queen Regent
Saovabha Phongsri
----Supreme Queen
Savang Vadhana
----High Queen
Sunanda Kumariratana
----Queen
Sukhumala Marasri
| rowspan="4" |Mongkut
| rowspan="2" align="center" |born
20 September 1853
----reigned
1868–1910
<small></small>
----death
23 October 1910
<small></small>
| rowspan="2" align="center" |1st Coronation
11 November 1868
----2nd Coronation<br>16 November 1873
| rowspan="2" |
| align="center" |100px<br>
----Wichaichan<br>(cousin)
|-
| align="center" |Viceroyalty abolished in 1885 after the Front Palace Crisis
----Replaced with the title of <u>Crown Prince</u>
|-
! align="center" |6
| align="center" |100x100px
115x115px
| align="center" |Mongkutklao
พระมงกุฎเกล้าเจ้าอยู่หัว
----Rama VI<br>พระรามที่ ๖ (รัชกาลที่ ๖)<br>(new regnal name)
<br>100x100px
| align="center" |Phrabat Somdet Phra Poramenthra Maha Vajiravudh Phra Mongkutklao Chao Yu Hua<br>พระบาทสมเด็จพระปรเมนทรมหาวชิราวุธ พระมงกุฎเกล้าเจ้าอยู่หัว
----Phrabat Somdet Phra Ramathibodi Sisinthara Maha Vajiravudh Phra Mongkutklao Chao Yu Hua<br>พระบาทสมเด็จพระรามาธิบดีศรีสินทรมหาวชิราวุธ พระมงกุฎเกล้าเจ้าอยู่หัว<br>(name to be used during his lifetime)
----Phra Maha Thirarat Chao<br>พระมหาธีรราชเจ้า
|Vajiravudh
วชิราวุธ
----Toh
โต
|Supreme Queen
Suvadhana
| align="center" |born
1 January 1881
----reigned
1910–1925
<small></small>
----death
26 November 1925
<small></small>
| align="center" |1st Coronation
11 November 1910
----2nd Coronation<br><nowiki/>28 November 1911
| colspan="2" |
|-
! align="center" |7
| align="center" |100x100px
221x221px
| align="center" |Pokklao
ปกเกล้า
----Rama VII<br>พระรามที่ ๗<br>(รัชกาลที่ ๗)
<br>100x100px
| align="center" |Phrabat Somdet Phra Poramenthra Maha Prajadhipok Phra Pokklao Chao Yu Hua<br>พระบาทสมเด็จพระปรมินทรมหาประชาธิปก พระปกเกล้าเจ้าอยู่หัว
|Prajadhipok
ประชาธิปก
----Iad Noi
เอียดน้อย
|Supreme Queen
Rambai Barni
| align="center" |born
8 November 1893
----reigned
1925–1935
<small></small>
----death
30 May 1941
<small></small>
| align="center" |Coronation
25 February 1926
| colspan="2" |
|-
| colspan="11" align="center" |<u>Transformation of a absolute monarchical system into a constitutional monarchical system</u>
|-
! align="center" |8
| align="center" |100x100px
161x161px
| align="center" |Rama VIII<br>พระรามที่ ๘<br>(รัชกาลที่ ๘)
<br>100x100px
| align="center" |Phrabat Somdet Phra Poramenthra Maha Ananda Mahidol Phra Atthamaramathibodin<br>พระบาทสมเด็จพระปรเมนทรมหาอานันทมหิดล พระอัฐมรามาธิบดินทร
|Ananda Mahidol
อานันทมหิดล
----
Nanda
นันท์
|no Queen
| rowspan="3" |Mahidol
| align="center" |born
20 September 1925
----reigned
1935–1946
<small></small>
----death
9 June 1946
<small></small>
| align="center" |Coronation
<u>13 August 1946</u>
| colspan="2" |
|-
! align="center" |9
| align="center" |126x126px
131x131px
| align="center" |Rama IX the Great<br>พระรามที่ ๙<br>(รัชกาลที่ ๙)
<br>100x100px
| align="center" |Phrabat Somdet Phra Poraminthra Maha Bhumibol Adulyadej the Great Mahitalathibet Ramathibodi Chakri Naribodin Sayamintharathirat Boromanatbophit<br>พระบาทสมเด็จพระปรมินทรมหาภูมิพลอดุลยเดช มหาราช มหิตลาธิเบศรรามาธิบดี จักรีนฤบดินทร สยามินทราธิราช บรมนาถบพิตร
----Phra Phatthara the Great<br>พระภัทรมหาราช
|Bhumibol Adulyadej
ภูมิพลอดุลเดช
----
Lek
เล็ก
|Supreme Queen Regent
Sirikit Kitiyakara
| align="center" |born
5 December 1927
----reigned
1946–2016
<small></small>
----death
13 October 2016
<small></small>
| align="center" |Coronation
5 May 1950
| colspan="2" |
|-
! align="center" |10
| align="center" |99x99px
129x129px
| align="center" |Wachiraklao
พระวชิรเกล้าเจ้าอยู่หัว
----Rama X<br>พระรามที่ ๑๐<br>(รัชกาลที่ ๑๐)<br>center|frameless|100x100px
| align="center" |Phrabat Somdet Phra Poramenthra Ramathibodi Sisinthara Maha Vajiralongkorn Phra Wachiraklao Chao Yu Hua<br>พระบาทสมเด็จพระปรเมนทรรามาธิบดีศรีสินทรมหาวชิราลงกรณ พระวชิรเกล้าเจ้าอยู่หัว
|Vajiralongkorn
วชิราลงกรณ
----
Chai
ชาย
|Supreme Queen
Suthida Tidjai
----Supreme Consort
Niramon Ounprom
| align="center" |born
28 July 1952
----reigned from
13 October 2016
----<u>Incumbent</u>
| align="center" |Coronation
4 May 2019
| colspan="2" |
|}
Timeline of monarchs
*This timeline follows the 5 official kingdoms of Thailand, Siam Confederation, Sukhothai-Si Satchalai City-state, and 2 supplemental monarchs from the Suphannaphum kingdom.
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
Not in use-->