| Competition: | Irish League |
| Season: | 1955–56 |
| Winners: | Linfield 23rd Irish title |
| Matches: | 132 |
| Total Goals: | 574 |
| League Topscorer: | Jimmy Jones (26) |
| Prevseason: | 1954–55 |
| Nextseason: | 1956–57 |
The 1955–56 Irish League was the 55th edition of the Irish League, the highest level of league competition in Northern Irish football. The league comprised 12 teams, and Linfield won the championship.