The Football Association of Thailand under the Patronage of His Majesty the King (Thai: สมาคมกีฬาฟุตบอลแห่งประเทศไทย ในพระบรมราชูปถัมภ์), or FA Thailand (FAT; สมาคมกีฬาฟุตบอลแห่งประเทศไทย) for short, is the governing body of association football, futsal and beach soccer in Thailand. It was founded on 25 April 1916. The association joined FIFA on 23 June 1925 and the AFC in 1954.

In 1916, King Vajiravudh founded "The Football Association of Thailand under Patronage of His Majesty the King" after that the association joined the FIFA in 1925 and AFC in 1954.

Thailand national football team joined Olympic Games first time in Australia in 1956.

The first football stadium, Supachalasai Stadium, was built in 1935. King's Cup, the first football cup was introduced in 1968. And then two years later, Queen's Cup, a national cup competition, started in 1970.

League competitions in Thailand include :

(See also: Thai football league system for the additional detail about league system.)

The following is a list of presidents of Football Association of Thailand (FA Thailand).