The 2018 Thai FA Cup is the 25th season of a Thailand's knockout football competition.

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.

Qualification round had drawn on 21 March 2018 by FA Thailand.

Quarter-finals round had drawn on 26 July 2018 by FA Thailand.

Semi-finals round had drawn on 23 August 2018 by FA Thailand.