Played in knock out format, the matches were played on a two-legged basis. Dalymount Park, Dublin was used as the home venue by all the League of Ireland clubs. For the second round of the competition, the six first round winners were joined by the two best losers. It was an extremely popular competition, adding variety to the restricted war-time football diet and generated much needed and significant revenues to the competing clubs.
List of finals
Key:
†
Trophy was shared.
Two-legged final. Aggregate score across two legs determined the winner; if score was level number of corner kicks determined the winner.