1890–91 Irish League
| Season | 1890–91 |
|---|---|
| Dates | 6 September 1890 – 30 April 1891 |
| Champions | Linfield 1st Irish title |
| Matches played | 49 |
| Goals scored | 337 (6.88 per match) |
| Top goalscorer | Robert Hill (20 goals) |
| Biggest home win | Linfield 14–0 Oldpark |
| Biggest away win | Cliftonville 0–8 Linfield Milford 0–8 Glentoran Milford 1–9 Distillery Oldpark 2–10 Ulster |
| Highest scoring | Linfield 14–0 Oldpark Linfield 9–5 Ulster |
1891–92 → | |
The 1890–91 Irish League was the inaugural edition of the Irish League, the highest level of league competition in Irish football organised by the Irish Football Association.
For this season, the league used a double round-robin format, where teams played each other both home and away once. It comprised eight teams, and was won by Linfield.