| Competition: | Irish League |
| Season: | 1969–70 |
| Winners: | Glentoran 14th Irish title |
| Matches: | 132 |
| Total Goals: | 440 |
| League Topscorer: | Des Dickson (21) |
| Prevseason: | 1968–69 |
| Nextseason: | 1970–71 |
The 1969–70 Irish League was the 69th edition of the Irish League, the highest level of league competition in Northern Irish football. The league consisted of 12 teams, and Glentoran won the championship.