| Competition: | Torneo Descentralizado |
| Season: | 1975 |
| Dates: | 11 January 1975 – 29 February 1976 |
| Winners: | Alianza Lima |
| Relegated: | Unión Tumán Atlético Grau |
| Continentalcup1: | Copa Libertadores |
| Continentalcup1 Qualifiers: | Alianza Lima Alfonso Ugarte |
| Continentalcup2: | Copa Simón Bolívar |
| Continentalcup2 Qualifiers: | Alianza Lima |
| Prevseason: | 1974 |
| Nextseason: | 1976 |
The 1975 season of the Torneo Descentralizado, the top category of Peruvian football, was played by 18 teams. The top six qualified to the final group stage. As the First Division was reduced to 16 teams for 1976, no team was promoted and two teams were relegated. The criteria for relegation: Grau as the last placed team; Unión Tumán as the worst team from a Department (Lambayeque) with two teams (the other was Juan Aurich). This rule didn't apply for Lima clubs. A playoff match for 2nd place (qualifying for the Copa Libertadores) was necessary. The national champions were Alianza Lima.
| Team | City | Stadium | Capacity | Field | |
|---|---|---|---|---|---|
| Enrique Torres Belón | 20,000 | Grass | |||
| La Victoria, Lima | Alejandro Villanueva | 35,000 | Grass | ||
| 15,000 | Grass | ||||
| Miguel Grau (Piura) | 25,000 | Grass | |||
| 24,000 | Grass | ||||
| 40,000 | Grass | ||||
| 24,000 | Grass | ||||
| 45,750 | Grass | ||||
| 20,000 | Grass | ||||
| 45,750 | Grass | ||||
| 24,500 | Grass | ||||
| 15,000 | Grass | ||||
| 20,000 | Grass | ||||
| 15,000 | Grass | ||||
| 45,750 | Grass | ||||
| Julio Lores Colan | 10,000 | Grass | |||
| Eugenio Zapata Mingoya | 8,000 | Grass | |||
| 45,750 | Grass |
Teams play each other once, either home or away. All matches were played in Lima.