This is a list of wars involving the Kingdom of Thailand, its predecessor states, and by Siamese people, from antiquity to the present day.
It also includes wars fought outside Thailand by the Thai military.
Location: Champa Trần dynasty Location: Northern Ayutthaya, Southern Lan Na[3][full citation needed] Location: Upper Tenessarim coast, western and central Siam Location: Ayutthaya, Phitsanulok, Sukhothai Location: Ayutthaya, Phitsanulok, Kamphaeng Phet and Lan Xang Location: Ayutthaya Kingdom and lower Tanintharyi Region Location: Cambodia Location: Southern and Central Myanmar Location: Upper Tenasserim coast (1624–1636)[6][7][8] Dutch East India Company Location: Northern Siam and Tenasserim coast Location: Tenasserim coast Location: Mergui and Coromandel coast Location: Bangkok, Thailand Location: Ayutthaya Kingdom Location: Cambodia Location: Tenasserim, Siam Location: Tenasserim coast, Gulf of Siam coast, Suphanburi, Ayutthaya Location: Siam Location: Cambodia, Southern Vietnam Location: Northern and central Siam, Lan Na Location: Khorat Plateau Location: Rạch Gầm River and Xoài Mút River, Southern Vietnam Location: Western Siam Location:Tenasserim Coast Location:Tenasserim Coast Location: Lanna Kingdom, Northern Thailand Location: Lanna Kingdom, Northern Thailand Location: Phuket Location: Cambodia, Southern Vietnam Vietnamese forces restore Ang Chan to the Cambodian throne Location: Kedah Location: Burma, East Bengal, Manipur Location: Central Laos Location: Cambodia, Southern Vietnam Location: Cambodia, Cochinchina Siamese interventionCambodia independence from VietnamCambodia came under joint Siamese-Vietnamese suzerainty Location: Cambodia, Southern Vietnam Location: Kengtung, Trans-Salween region Location: Eastern Cambodia, Location: French Indochina, Siam Location: Phrae Location: Europe (Decapitation Boonpeng 1919) Location: Central Thailand, Nakhon Ratchasima, Lak Si and Ratchaburi Location: French Indochina Location:Thailand Thai alliance with Japan Location: Southeast Asia Location: Malay Peninsula, Southeast Asia ( Dusun Nyor Rebellion 1948 ) Australia New ZealandSupported by: Thailand(Thai–Malaysian border) Supported by: China[21][22][23] Viet Minh(until 1954) North Vietnam(from 1954)[24][25][26] Soviet Union[23][27] Indonesia[22][23] Location: Korean Peninsula, Yellow Sea, Sea of Japan, Korea Strait, China–North Korea border United Nations[b] Location: South Vietnam, North Vietnam, Cambodia, Laos, South China Sea, Gulf of Thailand Location: Kingdom of Laos Location: Thailand (primarily East Thailand) Supported by: Taiwan (until July 1981) United States[citation needed] Pathet Lao[citation needed] Supported By: Khmer Rouge (until 1982)[citation needed] Vietnam China (from 1979) Soviet Union Location: Cambodia North Vietnam Việt Cộng Location: Malaysian Peninsular and Sarawak Supported by: United Kingdom[46] Australia New Zealand[47] United States South Vietnam (until 1975) Malayan Communist Party[48] Communist Party of Thailand (until 1983) Supported by: China[49][21] Soviet Union[49] Vietnam (until late 1970s) North Kalimantan Communist Party Location: Vietnam, Laos, Cambodia, Thailand, China Lao royalistsHmong insurgents FULRO Thailand Supported by: United States North Korea[52] Supported by: Warsaw Pact countries (until 1991)[52] Location: Thai–Cambodian border, Gulf of Thailand Supported by: United States China Location: Chat Trakan District, Phitsanulok Province, ThailandBotene District, Sainyabuli Province, Lao PDR Location: East Timor International Force: Iraq United States United Kingdom Supported by: Iran[62][63] Iraqi Kurdistan Sunni insurgents Shia insurgents Supported by: Iran Islamic State Oil smugglers[95][96][97] Pirates[98] Location: Thai–Cambodian border