The 1885–86 Irish Cup was the 6th edition of the Irish Cup, the premier knock-out cup competition in Irish football.
Distillery won the tournament for the 3rd time and 3rd year in a row, defeating Limavady 1–0 in a repeat of the previous year's final.
[1][2] 1After a protest by YMCA that the match did not kick off at the correct time, a replay was ordered.
[3] 1 After protesting against Moyola Park's rough play in the previous match, Magherafelt refused to play the replay.
[4] 2 After both teams drew again, they were moved into the second round.