| Competition: | Irish League |
| Season: | 1972–73 |
| Winners: | Crusaders 1st Irish title |
| Matches: | 132 |
| Total Goals: | 446 |
| League Topscorer: | Des Dickson (23) |
| Prevseason: | 1971–72 |
| Nextseason: | 1973–74 |
The 1972–73 Irish League was the 72nd edition of the Irish League, the highest level of league competition in Northern Irish football. The league consisted of 12 teams, and Crusaders won the championship.