| Competition: | League of Ireland |
| Season: | 1928–29 |
| Winners: | Shelbourne (2nd title) |
| League Topscorer: | Eddie Carroll (17 goals) |
| Matches: | 90 |
| Total Goals: | 381 |
| Prevseason: | 1927–28 |
| Nextseason: | 1929–30 |
The 1928–29 League of Ireland was the eighth season of the League of Ireland. Bohemians were the defending champions.
Shelbourne won their second title.
Athlone Town were not re-elected to the League, while Drumcondra were elected.
| Team | Location | Stadium | |
|---|---|---|---|
| Dublin (Phibsborough) | Dalymount Park | ||
| Woodbrook Ground | |||
| Dublin (The Liberties) | Richmond Park | ||
| Drumcondra | Dublin (Clonturk) | Clonturk Park | |
| Athletic Grounds | |||
| Ballinlough Road | |||
| Dublin (Crumlin) | Rutland Avenue | ||
| Dublin (Crumlin) | St. James's Park | ||
| Dublin (Milltown) | Glenmalure Park | ||
| Dublin (Ringsend) | Shelbourne Park |