| Irish Cup | |
| Year: | 1939–40 |
| Num Teams: | 16 |
| Defending Champions: | Linfield |
| Second: | Glenavon |
| Matches: | 18 |
| Goals: | 54 |
| Prev Season: | 1938–39 |
| Next Season: | 1940–41 |
The 1939–40 Irish Cup was the 60th edition of the Irish Cup, the premier knock-out cup competition in Northern Irish football.
Ballymena United won the tournament for the 1st time, defeating Glenavon 2–0 in the final at Windsor Park.[1] [2]
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