The 2023–24 Thai League 3 Cup is the 1st season of a Thailand's knockout football competition.

[2] Matches in all rounds are single-legged, except for the semi-finals, which have been two-legged since the competition began.

The semi-finals were the exception to this when the away goals rule and penalties were introduced.

[7] 58 clubs in the 2023–24 Thai League 3 were accepted into the tournament, and it began with the first qualification round on 27 September 2023 and concluded with the final on 3 March 2024.

[21] It was played at the BG Stadium in Pathum Thani, Thailand on 3 March 2024.