Thailand

Two unified Thai kingdoms emerged in the mid-13th century. The Sukhothai Kingdom, located in the south-central plains, gained its independence from the Khmer Empire to the east. By the late 13th century, Sukhothai’s territory extended into present-day Burma and Laos. Sukhothai lasted until the mid-15th century. The Thai Lan Na Kingdom was established in the north with its capital at Chang Mai; the Burmese conquered Lan Na in the 16th century. The Ayutthaya Kingdom (14th-18th centuries) succeeded the Sukhothai and would become known as the Siamese Kingdom. During the Ayutthaya period, the Thai/Siamese peoples consolidated their hold on what is present-day central and north-central Thailand. Following a military defeat at the hands of the Burmese in 1767, the Siamese Kingdom rose to new heights under the military ruler TAKSIN, who defeated the Burmese occupiers and expanded the kingdom’s territory into modern-day northern Thailand (formerly the Lan Na Kingdom), Cambodia, Laos, and the Malay Peninsula. In the mid-1800s, Western pressure led to Siam signing trade treaties that reduced the country’s sovereignty and independence. In the 1890s and 1900s, the British and French forced the kingdom to cede Cambodian, Laotian, and Malay territories that had been under Siamese control.
Following a bloodless revolution in 1932 that led to the establishment of a constitutional monarchy, Thailand's political history was marked by a series of mostly bloodless coups with power concentrated among military and bureaucratic elites. Periods of civilian rule were unstable. The Cold War era saw a communist insurgency and the rise of strongman leaders. Thailand became a US treaty ally in 1954 after sending troops to Korea and later fighting alongside the US in Vietnam. In the 21st century, Thailand has experienced additional turmoil, including a military coup in 2006 that ousted then Prime Minister THAKSIN Chinnawat and large-scale street protests led by competing political factions in 2008-2010. In 2011, THAKSIN's youngest sister, YINGLAK Chinnawat, led the Puea Thai Party to an electoral win and assumed control of the government.
In 2014, after months of major anti-government protests in Bangkok, the Constitutional Court removed YINGLAK from office, and the Army, led by Gen. PRAYUT Chan-ocha, then staged a coup against the caretaker government. The military-affiliated National Council for Peace and Order (NCPO) ruled the country under PRAYUT for more than four years, drafting a new constitution that allowed the military to appoint the entire 250-member Senate and required a joint meeting of the House and Senate to select the prime minister -- which effectively gave the military a veto on the selection. King PHUMIPHON Adunyadet passed away in 2016 after 70 years on the throne; his only son, WACHIRALONGKON (aka King RAMA X), formally ascended the throne in 2019. The same year, a long-delayed election allowed PRAYUT to continue his premiership, although the results were disputed and widely viewed as skewed in favor of the party aligned with the military. The country again experienced major anti-government protests in 2020. The reformist Move Forward Party won the most seats in the 2023 election but was unable to form a government, and Srettha THRAVISIN from the Pheu Thai Party replaced PRAYUT as prime minister after forming a coalition of moderate and conservative parties.

highest population density is found in and around Bangkok; significant population clusters throughout large parts of the country, particularly north and northeast of Bangkok and in the extreme southern region of the country

controls only land route from Asia to Malaysia and Singapore

highest population density is found in and around Bangkok; significant population clusters throughout large parts of the country, particularly north and northeast of Bangkok and in the extreme southern region of the country

name: Bangkok
geographic coordinates: 13 45 N, 100 31 E
time difference: UTC+7 (12 hours ahead of Washington, DC, during Standard Time)
etymology: the name is from the Thai words bang (region) and kok (olive trees); the city's full ceremonial name holds the world record for longest place name, Krungthepmahanakhon amonrattanakosin mahintharayutthaya mahadilokphop noppharatratchathaniburirom udomratchaniwetmahasathan amonphimanawatansathit sakkathattiyawitsanukamprasit, which means "City of angels, great city of immortals, magnificent city of the nine gems, seat of the king, city of royal palaces, home of gods incarnate, erected by Vishvakarman at Indra's behest"

76 provinces (changwat, singular and plural) and 1 municipality* (maha nakhon); Amnat Charoen, Ang Thong, Bueng Kan, Buri Ram, Chachoengsao, Chai Nat, Chaiyaphum, Chanthaburi, Chiang Mai, Chiang Rai, Chon Buri, Chumphon, Kalasin, Kamphaeng Phet, Kanchanaburi, Khon Kaen, Krabi, Krung Thep* (Bangkok), Lampang, Lamphun, Loei, Lop Buri, Mae Hong Son, Maha Sarakham, Mukdahan, Nakhon Nayok, Nakhon Pathom, Nakhon Phanom, Nakhon Ratchasima, Nakhon Sawan, Nakhon Si Thammarat, Nan, Narathiwat, Nong Bua Lamphu, Nong Khai, Nonthaburi, Pathum Thani, Pattani, Phangnga, Phatthalung, Phayao, Phetchabun, Phetchaburi, Phichit, Phitsanulok, Phra Nakhon Si Ayutthaya, Phrae, Phuket, Prachin Buri, Prachuap Khiri Khan, Ranong, Ratchaburi, Rayong, Roi Et, Sa Kaeo, Sakon Nakhon, Samut Prakan, Samut Sakhon, Samut Songkhram, Saraburi, Satun, Sing Buri, Si Sa Ket, Songkhla, Sukhothai, Suphan Buri, Surat Thani, Surin, Tak, Trang, Trat, Ubon Ratchathani, Udon Thani, Uthai Thani, Uttaradit, Yala, Yasothon

history: many previous; latest drafted and presented 29 March 2016, approved by referendum 7 August 2016, signed into law by the king on 6 April 2017
amendment process: amendments require a majority vote in a joint session of the House and Senate and further require at least one fifth of opposition House members and one third of the Senate vote in favor; a national referendum is additionally required for certain amendments; all amendments require signature by the king

chief of state: King WACHIRALONGKON; also spelled Vajiralongkorn (since 1 December 2016)
head of government: Prime Minister ANUTIN Charnvirakul (since 5 Sep 2025)
cabinet: Council of Ministers nominated by the prime minister, appointed by the king; a Privy Council advises the king
election/appointment process: the monarchy is hereditary; prime minister candidate approved by House of Representatives and appointed by the king

legislature name: National Assembly (Rathhasapha)
legislative structure: bicameral

chamber name: House of Representatives (Saphaphuthan Ratsadon)
number of seats: 500 (all directly elected)
electoral system: mixed system
scope of elections: full renewal
term in office: 4 years
most recent election date: 5/14/2023
parties elected and seats per party: Move Forward (151); Pheu Thai (141); Bhumjaithai (71); Palang Pracharath (40); United Thai Nation (36); Democrat Party (25); Other (36)
percentage of women in chamber: 19.6%
expected date of next election: May 2028

chamber name: Senate (Wuthisapha)
number of seats: 200 (all indirectly elected)
scope of elections: full renewal
term in office: 5 years
most recent election date: 6/9/2024 to 6/26/2024
percentage of women in chamber: 22.5%
expected date of next election: June 2029
note: note: Senate members are indirectly elected from 20 eligible groups of professions, including agriculture, artists or athletes, business owners, education, employees or workers, independent professionals, industrialists, law and justice, mass communication, public health, science and technology, tourism-related professions, women, and elderly, disabled, or ethnic groups

highest court(s): Supreme Court of Justice (consists of the court president, 6 vice presidents, 60-70 judges, and organized into 10 divisions); Constitutional Court (consists of the court president and 8 judges); Supreme Administrative Court (number of judges determined by Judicial Commission of the Administrative Courts)
judge selection and term of office: Supreme Court judges selected by the Judicial Commission of the Courts of Justice and approved by the monarch; judge term determined by the monarch; Constitutional Court justices - 3 judges drawn from the Supreme Court, 2 judges drawn from the Administrative Court, and 4 judge candidates selected by the Selective Committee for Judges of the Constitutional Court, and confirmed by the Senate; judges appointed by the monarch serve single 9-year terms; Supreme Administrative Court judges selected by the Judicial Commission of the Administrative Courts and appointed by the monarch; judges serve for life
subordinate courts: courts of first instance and appeals courts within both the judicial and administrative systems; military courts

Bhumjaithai Party or BJT (aka Phumchai Thai Party or PJT; aka Thai Pride Party) 
Chat Thai Phatthana Party (Thai Nation Development Party) or CTP
Move Forward Party or MFP (dissolved by order of the Constitutional Court, August 2024)
Palang Pracharat Party (People's State Power Party) or PPRP 
Pheu (Puea) Thai Party (For Thais Party) or PTP
Prachachat Party or PCC 
Prachathipat Party (Democrat Party) or DP 
Thai Sang Thai Party 
United Thai Nation (Ruam Thai Sang Chat) or UTN

chief of mission: Ambassador Robert F. GODEC (since 7 October 2022); note - Sean O'NEILL was sworn in as the Ambassador-designate on 12 November 2025 and is expected to arrive in Thailand in the near-term
embassy: 95 Wireless Road, Bangkok 10330
mailing address: 7200 Bangkok Place, Washington DC  20521-7200
telephone: [66] 2-205-4000
FAX: [66] 2-205-4103
email address and website: acsbkk@state.gov
https://th.usembassy.gov/
consulate(s) general: Chiang Mai

ADB, APEC, ARF, ASEAN, BIMSTEC, BIS, CD, CICA, CP, EAS, FAO, G-77, IAEA, IBRD, ICAO, ICC (national committees), ICRM, IDA, IFAD, IFC, IFRCS, IHO, ILO, IMF, IMO, IMSO, Interpol, IOC, IOM, IPU, ISO, ITSO, ITU, ITUC (NGOs), MIGA, NAM, OAS (observer), OIC (observer), OIF (observer), OPCW, OSCE (partner), PCA, PIF (partner), UN, UNAMID, UNCTAD, UNESCO, UNHCR, UNIDO, UNMOGIP, UNOOSA, UNOCI, UNWTO, UPU, WCO, WFTU (NGOs), WHO, WIPO, WMO, WTO

total World Heritage Sites: 8 (5 cultural, 3 natural)
selected World Heritage Site locales: Historic City of Ayutthaya (c); Historic Sukhothai and Associated Historic Towns (c); Thungyai-Huai Kha Khaeng Wildlife Sanctuaries (n); Ban Chiang Archaeological Site (c); Dong Phayayen-Khao Yai Forest Complex (n); Kaeng Krachan Forest Complex (n); The Ancient Town of Si Thep and its Associated Dvaravati Monuments (n); Phu Phrabat, a testimony to the Sīma stone tradition of the Dvaravati period (c)

upper middle-income Southeast Asian economy; substantial infrastructure; major electronics, food, and automobile parts exporter; globally used currency; extremely low unemployment; ongoing Thailand 4.0 economic development

tourism, textiles and garments, agricultural processing, beverages, tobacco, cement, light manufacturing such as jewelry and electric appliances, computers and parts, integrated circuits, furniture, plastics, automobiles and automotive parts, agricultural machinery, air conditioning and refrigeration, ceramics, aluminum, chemical, environmental management, glass, granite and marble, leather, machinery and metal work, petrochemical, petroleum refining, pharmaceuticals, printing, pulp and paper, rubber, sugar, rice, fishing, cassava, world's second-largest tungsten producer and third-largest tin producer

highest court(s): Supreme Court of Justice (consists of the court president, 6 vice presidents, 60-70 judges, and organized into 10 divisions); Constitutional Court (consists of the court president and 8 judges); Supreme Administrative Court (number of judges determined by Judicial Commission of the Administrative Courts)
judge selection and term of office: Supreme Court judges selected by the Judicial Commission of the Courts of Justice and approved by the monarch; judge term determined by the monarch; Constitutional Court justices - 3 judges drawn from the Supreme Court, 2 judges drawn from the Administrative Court, and 4 judge candidates selected by the Selective Committee for Judges of the Constitutional Court, and confirmed by the Senate; judges appointed by the monarch serve single 9-year terms; Supreme Administrative Court judges selected by the Judicial Commission of the Administrative Courts and appointed by the monarch; judges serve for life
subordinate courts: courts of first instance and appeals courts within both the judicial and administrative systems; military courts

Royal Thai Armed Forces (RTARF): Royal Thai Army (RTA), Royal Thai Navy (RTN; includes Royal Thai Marine Corps), Royal Thai Air Force (RTAF)
Office of the Prime Minister: Royal Thai Police (2025)
note: note: official paramilitary forces in Thailand include the Thai Rangers (Thahan Phran or "Hunter Soldiers") under the Army; the Paramilitary Marines under the Navy; the Border Patrol Police (BPP) under the Royal Thai Police; the Volunteer Defense Corps (VDC or O So) and National Defense Volunteers (NDV), both under the Ministry of Interior; there are also several government-backed volunteer militias created to provide village security against insurgents in the Deep South or to assist government security forces

the RTARF has a diverse array of foreign-supplied weapons and equipment, as well as some domestically produced items; in recent years, Thailand has received arms from a variety of countries, including China and the US; Thailand has a domestic defense industry, which produces such items as armored vehicles, artillery systems, naval vessels, unmanned aerial vehicles, and other military technologies (2024)

18 years of age for voluntary military service for men and women; 21 years of age for compulsory military service for men; men register at 18 years of age; volunteer service obligation may be as short as 6 or 12 months, depending on educational qualifications; conscript service obligation also varies by educational qualifications, but is typically 24 months (2024)
note: note: serving in the armed forces is a national duty of all Thai citizens; conscription was introduced in 1905; it includes women, however, only men over the age of 21 who have not gone through reserve training are conscripted; conscripts are chosen by lottery (on draft day, eligible draftees can request volunteer service, or they may choose to stay for the conscription lottery); approximately 100,000 men are drafted for military service each year

the missions of the Royal Thai Armed Forces (RTARF) include defending the country’s territory and sovereignty, protecting the monarchy, ensuring internal security, and responding to natural disasters; key areas of emphasis are disputed international borders and a low-level insurgency in the country's south; the military has historically had a large role in domestic politics and has attempted as many as 20 coups since the fall of absolute monarchy in 1932, the most recent being in 2014
in July 2025, following months of rising tensions, the RTARF and Cambodian military forces clashed in multiple locations along their disputed border; both sides blamed the other for provoking the five-day conflict, which included cross-border artillery shelling by both sides and air attacks by RTARF fighter aircraft and drones; since 2004, the RTARF and Thai paramilitary forces have combated a separatist insurgency in the southern Thailand provinces of Pattani, Yala, and Narathiwat, as well as parts of Songkhla; the insurgency is rooted in ethnic Malay nationalist resistance to Thai rule that followed the extension of Siamese sovereignty over the Patani Sultanate in the 18th century; the insurgency consists of several armed groups, the largest of which is the Barisan Revolusi Nasional-Koordinasi (BRN-C): insurgent attacks have largely involved bombings; since 2020, Thai officials have been negotiating with BRN, and has parallel talks with an umbrella organization, MARA Pattani, that claims to represent the insurgency groups (2025)

chief of mission: Ambassador Robert F. GODEC (since 7 October 2022); note - Sean O'NEILL was sworn in as the Ambassador-designate on 12 November 2025 and is expected to arrive in Thailand in the near-term
embassy: 95 Wireless Road, Bangkok 10330
mailing address: 7200 Bangkok Place, Washington DC  20521-7200
telephone: [66] 2-205-4000
FAX: [66] 2-205-4103
email address and website: acsbkk@state.gov
https://th.usembassy.gov/
consulate(s) general: Chiang Mai

ADB, APEC, ARF, ASEAN, BIMSTEC, BIS, CD, CICA, CP, EAS, FAO, G-77, IAEA, IBRD, ICAO, ICC (national committees), ICRM, IDA, IFAD, IFC, IFRCS, IHO, ILO, IMF, IMO, IMSO, Interpol, IOC, IOM, IPU, ISO, ITSO, ITU, ITUC (NGOs), MIGA, NAM, OAS (observer), OIC (observer), OIF (observer), OPCW, OSCE (partner), PCA, PIF (partner), UN, UNAMID, UNCTAD, UNESCO, UNHCR, UNIDO, UNMOGIP, UNOOSA, UNOCI, UNWTO, UPU, WCO, WFTU (NGOs), WHO, WIPO, WMO, WTO

ADB, APEC, ARF, ASEAN, BIMSTEC, BIS, CD, CICA, CP, EAS, FAO, G-77, IAEA, IBRD, ICAO, ICC (national committees), ICRM, IDA, IFAD, IFC, IFRCS, IHO, ILO, IMF, IMO, IMSO, Interpol, IOC, IOM, IPU, ISO, ITSO, ITU, ITUC (NGOs), MIGA, NAM, OAS (observer), OIC (observer), OIF (observer), OPCW, OSCE (partner), PCA, PIF (partner), UN, UNAMID, UNCTAD, UNESCO, UNHCR, UNIDO, UNMOGIP, UNOOSA, UNOCI, UNWTO, UPU, WCO, WFTU (NGOs), WHO, WIPO, WMO, WTO

refugees: 87,025 (2024 est.)
IDPs: 19 (2023 est.)
stateless persons: 612,524 (2024 est.)

air pollution from vehicle emissions; water pollution from organic and factory wastes; water scarcity; deforestation; soil erosion; illegal hunting; hazardous waste disposal

26 digital TV stations and 6 terrestrial TV stations broadcast nationally via relay stations, with 2 of the terrestrial stations military-owned and the other 4 state-owned or state-controlled; some leased to private enterprise; all required to broadcast government-produced news; multi-channel satellite and cable TV subscriptions available; radio frequencies allotted for over 500 government and commercial radio stations; many small community radio stations operate with low-power transmitters (2017)