| Chang FA Cup | |
|---|---|
 | |
| Tournament details | |
| Country | Thailand |
| Dates | 4 April 2018 – 27 October 2018 |
| Teams | 92 |
| Defending champions | Chiangrai United |
| Final positions | |
| Champions | Chiangrai United (2nd title) |
| Runner-up | Buriram United |
| Tournament statistics | |
| Matches played | 91 |
| Goals scored | 311 (3.42 per match) |
| Top goal scorer(s) | Bill (8 goals) |
| Best player | Bill |
The 2018 Thai FA Cup is the 25th 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. 92 clubs were accepted into the tournament, and it began with the qualification round on 4 April 2018, and concluded with the final on 27 October 2018. The winner would have qualified for the 2019 AFC Champions League preliminary round 2 and the 2019 Thailand Champions Cup.