| Competition: | Peruvian Primera División |
| Season: | 1948 |
| Dates: | 12 June 1948 – 16 January 1949 |
| Winners: | Alianza Lima |
| Relegated: | Ciclista Lima Jorge Chávez (C) |
| Prevseason: | 1947 |
| Nextseason: | 1949 |
The 1948 season of the Peruvian Primera División, the top category of Peruvian football, was played by 9 teams. The national champions were Alianza Lima.
| Team | City | |
|---|---|---|
| La Victoria, Lima | ||
| Callao | ||
| Cercado de Lima | ||
| Cercado de Lima | ||
| Callao | ||
| Callao | ||
| Rímac, Lima | ||
| La Victoria, Lima | ||
| Cercado de Lima |
Teams play each other once, either home or away. All matches were played in Lima and Callao.