| Competition: | Primera División |
| Season: | 1975 |
| Winners: | River Plate (Metropolitano and Nacional) |
| Prevseason: | 1974 |
| Nextseason: | 1976 |
The 1975 Primera División season was the 84th season of top-flight football in Argentina. River Plate won both tournaments. None of the teams were relegated.[1]
| Competition: | Metropolitano |
| Season: | 1975 |
| Winners: | River Plate (14th title) |
| Promoted: | Temperley Unión (SF) |
| Relegated: | (none) |
| Continentalcup1: | 1976 Copa Libertadores |
| Continentalcup1 Qualifiers: | River Plate |
| League Topscorer: |  Héctor Scotta (32 goals) |
| Prevseason: | 1974 |
| Nextseason: | 1976 |
| Competition: | Nacional |
| Season: | 1975 |
| Winners: | River Plate (15th title) |
| Continentalcup1: | 1976 Copa Libertadores |
| Continentalcup1 Qualifiers: | Estudiantes LP |
| League Topscorer: | Héctor Scotta (28 goals) |
| Prevseason: | 1974 |
| Nextseason: | 1976 |