2025–26 Thai FA Cup

The 2025–26 Thai FA Cup is the 32nd season of Thai FA Cup, Thailand's top knockout football competition. Officially named the Chang FA Cup (Thai: ช้าง เอฟเอคัพ) due to sponsorship from Chang, the tournament is organized by the Football Association of Thailand and open to clubs across all divisions. 95 clubs entered the competition, which began with the qualification round on 24 September 2025.

Clubs from Thai League 1 ,Thai League 2, Thai League 3, the Thailand Semi-pro League, and the Thailand Amateur League compete in the qualification round, with some clubs receiving byes to the first round, which features 64 teams. Thai League 1 clubs automatically enter at this round. Matches in the qualification round proceed to penalties if tied after 90 minutes, while from the first round onward, extra time and penalties are used to determine the winner. All rounds are single-elimination, with home advantage determined by draw, except for the semifinals and final, which are held at neutral venues.

The tournament winner will earn a spot in the 2026–27 AFC Champions League Elite qualifying play-off and the 2026 Thailand Champions Cup. The champion will also receive a prize of 5,000,000 baht, while the runner-up will be awarded 1,000,000 baht. As one of the most prestigious competitions in Thai football, the FA Cup offers clubs from all tiers a chance to compete for national honors.