| Competition: | Irish League |
| Season: | 1986–87 |
| Winners: | Linfield 39th Irish title |
| Matches: | 182 |
| Total Goals: | 542 |
| League Topscorer: | Ray McCoy Gary Macartney (14 goals each) |
| Prevseason: | 1985–86 |
| Nextseason: | 1987–88 |
The 1986–87 Irish League was the 86th edition of the Irish League, the highest level of league competition in Northern Irish football. The league consisted of 14 teams, and Linfield won the championship.