The 1890–91 Irish Cup was the 11th edition of the Irish Cup, the premier knock-out cup competition in Irish football.
Linfield won the tournament for the 1st time, defeating Ulster 4–2 in the final.
Results First round
1 Match ordered to be replayed after Black Watch protested it was too dark to finish the match.
Replays
1 Match was ordered to be replayed on the grounds that no touchline had been drawn. 2 Cliftonville scratched (withdrew) after claiming that the ordering of a replay with 24 hours notice did not give them enough time to prepare.
Second replay
Second round
Third round
Fourth round
Semi-finals
Final
References
External links Northern Ireland Cup Finals. Rec.Sport.Soccer Statistics Foundation (RSSSF)