| Competition: | Primera División |
| Season: | 1955 |
| Winners: | River Plate (12th title) |
| Promoted: | Estudiantes (LP) |
| Relegated: | Platense |
| Continentalcup1: | 1955 Copa Aldao |
| Continentalcup1 Qualifiers: | River Plate |
| League Topscorer: |  Oscar Massei (21 goals) |
| Prevseason: | 1954 |
| Nextseason: | 1956 |
The 1955 Argentine Primera División was the 64th season of top-flight football in Argentina. The season began on April 30 and ended on December 11.[1]
River Plate won the championship while Platense was relegated.