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

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.

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.

Southeast Asian Games

Medals by games

Games	Gold	Silver	Bronze	Total	Rank
Southeast Asian Peninsular Games
Bangkok 1959	35	26	16	77	1
Yangon 1961	21	18	22	61	2
Kuala Lumpur 1965	38	33	35	106	1
Bangkok 1967	77	48	40	165	1
Yangon 1969	32	32	45	109	2
Kuala Lumpur 1971	44	27	38	109	1
Singapore 1973	47	25	27	99	1
Bangkok 1975	80	45	39	164	1
Southeast Asian Games
Kuala Lumpur 1977	37	35	33	105	2
Jakarta 1979	50	46	29	125	2
Manila 1981	62	45	41	148	2
Singapore 1983	49	40	38	127	3
Bangkok 1985	92	66	59	217	1
Jakarta 1987	63	57	67	187	2
Kuala Lumpur 1989	62	63	66	191	3
Manila 1991	72	80	69	221	3
Singapore 1993	63	70	63	196	2
Chiang Mai 1995	157	98	91	346	1
Jakarta 1997	83	97	78	258	2
Bandar Seri Begawan 1999	65	48	56	169	1
Kuala Lumpur 2001	103	86	89	278	2
Hanoi−Ho Chi Minh City 2003	90	93	98	281	2
Manila 2005	87	78	118	283	2
Nakhon Ratchasima 2007	183	123	103	409	1
Vientiane 2009	86	83	97	266	1
Jakarta−Palembang 2011	109	100	120	329	2
Naypyidaw 2013	107	94	81	282	1
Singapore 2015	95	83	69	247	1
Kuala Lumpur 2017	72	86	88	246	2
Philippines 2019	92	103	123	318	3
Hanoi 2021	92	103	136	331	2
Phnom Penh 2023	108	96	108	312	2
Bangkok–Chonburi–Songkhla 2025	Future event
Malaysia 2027	Future event
Singapore 2029	Future event
Total	2,453	2,127	2,182	6,762	1