1940 All-Comers' Challenge Cup

The 1940 All-Comers' Challenge Cup was the fifth season of the competition. A cup competition open to all teams in Mindano, it was contested by forty-eight clubs. The controversial decision was made to give twelve of the sixteen automatic second-round spaces to the member clubs of the 1940 Jessimine League, despite some of them having never played a game prior to the season. The four further byes were given to the top two in the 1939 Western Alliance and the two semi-finalists from the previous season's competition who did not already have byes.

The tournament was won by Shiresden Robins, in their first season of competitive play, after they beat Locanforth 4-1 in the final.