| Irish Cup | |
| Year: | 1972–73 |
| Num Teams: | 16 |
| Defending Champions: | Coleraine |
| Winners: | Glentoran (9th win) |
| Second: | Linfield |
| Matches: | 19 |
| Goals: | 58 |
| Prev Season: | 1971–72 |
| Next Season: | 1973–74 |
The 1972–73 Irish Cup was the 93rd edition of the Irish Cup, the premier knock-out cup competition in Northern Irish football.
Glentoran won the cup for the 9th time, defeating Linfield 3–2 in the final at Windsor Park.[1]
The holders Coleraine were eliminated in the semi-finals by Linfield.[2]
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