| Competition: | Torneo Descentralizado |
| Season: | 1977 |
| Dates: | 13 February 1977 – 22 January 1978 |
| Winners: | Alianza Lima |
| Relegated: | Cienciano |
| Continentalcup1: | Copa Libertadores |
| Continentalcup1 Qualifiers: | Alianza Lima Sporting Cristal |
| Prevseason: | 1976 |
| Nextseason: | 1978 |
The 1977 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 3 stages. The Preliminary Tournament contested in two groups (home and away matches plus 2 inter-group matches); each group winner qualified for the Championship Group. The second stage was the Descentralised (league tournament); the top 4 qualified for the Championship Group and the bottom two played for relegation. Championship Group was contested by 6 teams in home and away matches; teams carried their Descentralised Tournament record.Although finishing fifth in Descentralised, Universitario qualified for Championship Group, as Alianza had already qualified in Preliminary Tournament. Municipal and Cienciano played a third relegation playoff on a neutral ground, as each team won one match after home and away matches.
| Team | City | Stadium | Capacity | Field | |
|---|---|---|---|---|---|
| 20,000 | Grass | ||||
| Alejandro Villanueva | 35,000 | Grass | |||
| 15,000 | Grass | ||||
| 40,000 | Grass | ||||
| 24,000 | Grass | ||||
| 19,850 | 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 | |||
| 45,750 | Grass |