| Irish Cup | |
| Year: | 1957–58 |
| Num Teams: | 16 |
| Defending Champions: | Glenavon |
| Second: | Linfield |
| Matches: | 18 |
| Goals: | 78 |
| Prev Season: | 1956–57 |
| Next Season: | 1958–59 |
The 1957–58 Irish Cup was the 78th edition of the Irish Cup, the premier knock-out cup competition in Northern Irish football.
Ballymena United won the cup for the 2nd time, defeating Linfield 2–0 in the final at The Oval.[1]
Glenavon were the holders but they were defeated 4–2 by Linfield in the semi-finals.[2]
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