The 1934–35 League of Ireland was the fourteenth season of the League of Ireland. Bohemians were the defending champions.
Dolphin won their first title.
| Competition: | League of Ireland |
| Winners: | Dolphin (1st title) |
| Matches: | 90 |
| Total Goals: | 380 |
| League Topscorer: | Alf Rigby (17 goals) |
| Prevseason: | 1933–34 |
| Nextseason: | 1935–36 |
| Season: | 1934–35 |
Cork Bohemians and Shelbourne were not re-elected to the League, while Waterford and Sligo Rovers were elected in their place. Waterford were re-elected after a two-year absence, while Sligo Rovers became the first team from Connacht to compete in the League.
| Team | Location | Stadium | |
|---|---|---|---|
| Bohemians | Dublin (Phibsborough) | Dalymount Park | |
| Bray Unknowns | Bray | Woodbrook Ground | |
| Cork | Cork (Mardyke) | Mardyke | |
| Dolphin | Dublin (Dolphin's Barn) | Dolphin Park | |
| Drumcondra | Dublin (Clonturk) | Clonturk Park | |
| Dundalk | Dundalk | Athletic Grounds | |
| St. James's Gate | Dublin (Crumlin) | St. James's Park | |
| Shamrock Rovers | Dublin (Milltown) | Glenmalure Park | |
| Sligo Rovers | Sligo | The Showgrounds | |
| Waterford | Waterford | Kilcohan Park |
| Player | Club | Goals | ||
|---|---|---|---|---|
| 1 | Alf Rigby | St James's Gate | 17 | |
| 2 | Charles McDaid | Sligo Rovers | 16 | |
| 3 | Walter Walsh | Waterford | 13 |