1909–10 Irish League
| Season | 1909–10 |
|---|---|
| Dates | 4 September 1909 – 22 January 1910 |
| Champions | Cliftonville 2nd Irish title |
| Matches played | 56 |
| Goals scored | 160 (2.86 per match) |
| Biggest home win | Belfast Celtic 5–0 Shelbourne Glentoran 6–1 Bohemians |
| Biggest away win | Glentoran 1–4 Belfast Celtic Glentoran 1–4 Cliftonville |
| Highest scoring | Derry Celtic 5–4 Glentoran |
← 1908–09 1910–11 → | |
The 1909–10 Irish League was the 20th edition of the Irish League, the highest level of league competition in Irish football.
The league comprised eight teams, and Cliftonville won the championship for the 2nd time (1st time outright).