The 2017 Thai FA Cup is the 24th season of a Thailand's knockout football competition. It was sponsored by Chang, and known as the Chang FA Cup (Thai: ช้าง เอฟเอคัพ) for sponsorship purposes. The tournament is organized by the Football Association of Thailand. 74 clubs were accepted into the tournament, and it began with the qualification round on 5 April 2017, and concluded with the final on 25 November 2017. The winner would have qualified for the 2018 AFC Champions League preliminary round 2 and the 2018 Thailand Champions Cup.