| Competition: | Irish League |
| Season: | 1949–50 |
| Winners: | Linfield 20th Irish title |
| Matches: | 132 |
| Total Goals: | 520 |
| League Topscorer: | Sammy Hughes (23) |
| Prevseason: | 1948–49 |
| Nextseason: | 1950–51 |
The 1949–50 Irish League was the 49th 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 after a play-off with Glentoran.