Thailand at the SEA Games

Thailand started sending athletes to the Southeast Asian Games in 1959 as a Founding member of the Southeast Asian Games Federation (SEAGF) alongside Burma (now Myanmar), Kampuchea (now Cambodia), Laos, Malaya (now Malaysia), and the Republic of Vietnam (South Vietnam). Thailand first competed in the Southeast Asian Peninsular Games (SEAPG) from its namesake of "Peninsular" meaning the Peninsular nations of Southeast Asia would be competing in the said games. There were 8 events held as a Southeast Asian Peninsular Games, 3 of which were held in Thailand. The 1963 edition of the games that would have been hosted by Cambodia was cancelled due to domestic political situation within the nation.

Thailand at the Southeast Asian Games
IOC code	THA
NOC	National Olympic Committee of Thailand
Website	www.olympicthai.or.th/eng
Medals Ranked 1st	Gold 2,453 Silver 2,127 Bronze 2,182 Total 6,762
Southeast Asian Games appearances (overview)
1961 1963 1965 1967 1969 1971 1973 1975 1977 1979 1981 1983 1985 1987 1989 1991 1993 1995 1997 1999 2001 2003 2005 2007 2009 2011 2013 2015 2017 2019 2021 2023

In 1975, the last Southeast Asian Peninsular Games were held in Thailand before being renamed to Southeast Asian Games after expressed interest of competing from island nations in Southeast Asia such as Indonesia, the Philippines and Singapore just of the coast of Malaysia. Thailand hosted the first edition of these games with the new name in 1985, ten years after the 1975 edition.

Thailand in the Southeast Asian Games is considered to be one of the toughest competitors in numerous events, as they have established themselves as a powerhouse in the sports world in Southeast Asia. In the most-recent 2023 Southeast Asian Games in Cambodia, Thailand ranked second in the medal tally behind Vietnam. Until today, Thailand was the only country that consistently ranked in the top 3 in every edition of the Southeast Asian Games.

Thailand is set to host the 2025 Southeast Asian Games, after 18 years. The last time Thailand hosted the Games was in 2007 in Nakhon Ratchasima.