| Competition: | Irish League |
| Season: | 1898–99 |
| Winners: | Distillery 2nd Irish title |
| Matches: | 30 |
| Total Goals: | 106 |
| Prevseason: | 1897–98 |
| Nextseason: | 1899–1900 |
The 1898–99 Irish League was the 9th edition of the Irish League, the highest level of league competition in Irish football.
The league comprised 6 teams, and Distillery won the championship after a play-off with Linfield.