| Competition: | League of Ireland |
| Season: | 1937–38 |
| Winners: | Shamrock Rovers (5th title) |
| League Topscorer: | William Byrne (25 goals) |
| Matches: | 132 |
| Total Goals: | 603 |
| Prevseason: | 1936–37 |
| Nextseason: | 1938–39 |
The 1937–38 League of Ireland was the seventeenth season of the League of Ireland. Sligo Rovers were the defending champions.
Shamrock Rovers won their fifth title.
Dolphin resigned from the League voluntarily, while Limerick were elected in their place.
| Team | Location | Stadium | |
|---|---|---|---|
| Bohemians | Dublin (Phibsborough) | Dalymount Park | |
| Bray Unknowns | Bray | Carlisle Grounds | |
| Brideville | Dublin (The Liberties) | Harold's Cross Stadium | |
| Cork | Cork | Mardyke | |
| Drumcondra | Dublin (Clonturk) | Clonturk Park | |
| Dundalk | Dundalk | Oriel Park | |
| Limerick | Limerick | Markets Field | |
| St. James's Gate | Dublin (Crumlin) | St. James's Park | |
| Shamrock Rovers | Dublin (Milltown) | Glenmalure Park | |
| Shelbourne | Dublin (Ringsend) | Shelbourne Park | |
| Sligo Rovers | Sligo | The Showgrounds | |
| Waterford | Waterford | Kilcohan Park |