1978 Torneo Descentralizado
The 1978 Torneo Descentralizado, the top category of Peruvian football (soccer), was played by 16 teams. The national champion was Alianza Lima.
The season was divided into 2 stages. A Preliminary Tournament contested in two groups; this was a friendly tournament to keep teams occupied as the National Team was preparing for the 1978 World Cup Finals. The second stage was the Decentralized ; the top 2 qualified for Copa Libertadores and the last team was relegated.
Teams
Stadia locations
| Team | City | Stadium | Capacity | Field |
| Alfonso Ugarte | Puno | Enrique Torres Belón | 20,000 | Grass |
| Alianza Lima | La Victoria, Lima | Alejandro Villanueva | 35,000 | Grass |
| Atlético Chalaco | Callao | Miguel Grau | 15,000 | Grass |
| Atlético Torino | Talara | Campeonísimo | 8,000 | Grass |
| CNI | Iquitos | Max Augustín | 24,000 | Grass |
| Coronel Bolognesi | Tacna | Jorge Basadre | 19,850 | Grass |
| Defensor Lima | Breña, Lima | Nacional | 45,750 | Grass |
| Deportivo Junín | Huancayo | Huancayo | 20,000 | Grass |
| Deportivo Municipal | Cercado de Lima | Nacional | 45,750 | Grass |
| Juan Aurich | Chiclayo | Elías Aguirre | 24,500 | Grass |
| León de Huánuco | Huánuco | Heraclio Tapia | 15,000 | Grass |
| Melgar | Arequipa | Mariano Melgar | 20,000 | Grass |
| Sport Boys | Callao | Telmo Carbajo | 15,000 | Grass |
| Sporting Cristal | Rímac, Lima | Nacional | 45,750 | Grass |
| Unión Huaral | Huaral | Julio Lores Colan | 10,000 | Grass |
| Universitario | Breña, Lima | Nacional | 45,750 | Grass |