| Irish Cup | |
| Year: | 1888–89 |
| Country: |  Ireland |
| Num Teams: | 25 |
| Defending Champions: | Cliftonville |
| Winners: | Distillery (4th win) |
| Second: | YMCA |
| Matches: | 21 |
| Goals: | 140 |
| Prev Season: | 1887–88 |
| Next Season: | 1889–90 |
The 1888–89 Irish Cup was the 9th edition of the Irish Cup, the premier knock-out cup competition in Irish football.
Distillery won the tournament for the 4th time, defeating YMCA 5–4 in the final.[1] [2]
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1 Belfast Athletics left the pitch due to the weather conditions. A replay was ordered.
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