National Assembly of Thailand

National Assembly

รัฐสภา

Ratthasapha
Most recent: 27th Parliament
Seal of the National Assembly
Type
Type
HousesSenate
House of Representatives
History
Founded28 June 1932
Leadership
Vajiralongkorn
since 13 October 2016
Vacant
since 12 December 2025
Vice President of the National Assembly
(President of the Senate)
Mongkol Surasajja
since 26 July 2024
Anutin Charnvirakul (Caretaker), Bhumjaithai
since 7 September 2025
Vacant
since 12 December 2025
Structure
Seats700 (200 Senators, 500 MPs)
Senate political groups
House of Representatives political groups
Elections
Indirect limited voting with self-nomination
Parallel voting:
First-past-the-post voting (400 seats)
Party-list proportional representation (100 seats)
Last Senate election
9–26 June 2024
8 February 2026
Next Senate election
August–September 2029
By 2030
Meeting place
Sappaya-Sapasathan
Dusit, Bangkok
Thailand
Website
parliament.go.th

The National Assembly of Thailand (Abrv: NAT; Thai: รัฐสภาไทย, RTGSRatthasapha Thai lit. 'Sabha of the Thai Rashtra', pronounced [rát.tʰa.sa.pʰāː tʰāj]) is the bicameral legislative branch of the government of Thailand. It convenes in the Sappaya-Sapasathan, Dusit District, Bangkok.

The National Assembly was established in 1932 after the adoption of Thailand's first constitution, which transformed Thailand from an absolute monarchy to a constitutional monarchy.

During the 2013 political crisis, the House of Representatives was dissolved by Prime Minister Yingluck Shinawatra who called for elections on 2 February 2014 until it was nullified by the Constitutional Court. After the 2014 coup d'état, the National Assembly was replaced by the military-backed, unicameral National Legislative Assembly according to the 2014 constitution.

After the promulgation of the 2017 Constitution in April 2017, the National Assembly was reestablished but the constitution allowed the military National Legislative Assembly to temporarily remain in place until the National Assembly was formed following the 2019 general election.