| Irish Cup | |
| Year: | 1887–88 |
| Country: |  Ireland |
| Num Teams: | 35 |
| Defending Champions: | Ulster |
| Winners: | Cliftonville (2nd win) |
| Second: | Distillery |
| Matches: | 32 |
| Goals: | 178 |
| Prev Season: | 1886–87 |
| Next Season: | 1888–89 |
The 1887–88 Irish Cup was the 8th edition of the Irish Cup, the premier knock-out cup competition in Irish football.
Cliftonville won the tournament for the 2nd time, defeating Distillery 2–1 in the final. The holders Ulster were eliminated in the quarter-finals by Distillery.[1] [2]
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1 Whiteabbey protested about an opposition player's shirt colour and a replay was ordered.
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|}2 Mountcollyer protested the referee's IFA status and a replay was ordered.
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