| Competition: | League of Ireland |
| Dates: | 29 August 1925 – 3 January 1926 |
| Winners: | Shelbourne (1st title) |
| Matches: | 90 |
| Total Goals: | 445 |
| League Topscorer: | Billy Farrell (24 goals) |
| Biggest Home Win: | Shamrock Rovers 10-2 Pioneers |
| Highest Scoring: | Shamrock Rovers 10-2 Pioneers |
| Prevseason: | 1924–25 |
| Nextseason: | 1926–27 |
| Season: | 1925–26 |
The 1925–26 League of Ireland was the fifth season of the League of Ireland.
Shelbourne won their first title.
Brooklyn were not re-elected to the League, while Brideville were elected.
It began on 29 August 1925 and ended on 3 January 1926. Shamrock Rovers were the defending champions.
| Team | Location | Stadium | |
|---|---|---|---|
| Sports Ground | |||
| Dublin (Phibsborough) | Dalymount Park | ||
| Woodbrook Ground | |||
| Dublin (The Liberties) | Richmond Park | ||
| Ballinlough Road | |||
| Dublin (Crumlin) | Rutland Avenue | ||
| Dublin (Whitehall) | The Thatch | ||
| Dublin (Crumlin) | St. James's Park | ||
| Dublin (Milltown) | Milltown Park [1] | ||
| Dublin (Ringsend) | Shelbourne Park |
| Player | Club | Goals | ||
|---|---|---|---|---|
| 1 | Shamrock Rovers | 24 | ||
| 2 | John Simpson | Shelbourne | 18 | |
| 3 | Jim Sweeney | Athlone Town | 17 |