| Irish Cup | |
| Year: | 1956–57 |
| Num Teams: | 16 |
| Defending Champions: | Distillery |
| Winners: | Glenavon (1st win) |
| Second: | Derry City |
| Matches: | 20 |
| Goals: | 69 |
| Prev Season: | 1955–56 |
| Next Season: | 1957–58 |
The 1956–57 Irish Cup was the 77th edition of the Irish Cup, the premier knock-out cup competition in Northern Irish football.
Glenavon won the cup for the 1st time, defeating Derry City 2–0 in the final at Windsor Park.[1]
Distillery were the holders but they were defeated 1-0 by Glenavon in the semi-finals.[2]
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