1998 Torneo Descentralizado
The 1998 season of the Torneo Descentralizado was the 83rd season of the top category of Peruvian football. It was played by 12 teams. The national champion was Universitario.
The national championship was divided into two half-year tournaments, the Torneo Apertura and the Torneo Clausura. Each was played on a home-and-away round-robin basis. The winners of each would play for the national title in a playoff. If the same club had won both tournaments, it would have won the national championship automatically.
Following-season Copa Libertadores berths went to the winner of each tournament, while the runners-up played for a Copa CONMEBOL spot. The bottom team on the aggregate table was relegated, while the eleventh place held a relegation/promotion playoff against the winner of the Segunda División.Teams
| Team | City | Stadium | Capacity | Field |
| Alianza Atlético | Sullana | Campeones del 36 | 8,000 | Grass |
| Alianza Lima | Lima | Alejandro Villanueva | 35,000 | Grass |
| Cienciano | Cuzco | Garcilaso | 42,056 | Grass |
| Deportivo Municipal | Lima | Nacional | 45,750 | Grass |
| Deprotivo Pesquero | Chimbote | Manuel Rivera Sanchez | 25,000 | Grass |
| Juan Aurich | Chiclayo | Elías Aguirre | 24,500 | Grass |
| Lawn Tennis | Lima | Nacional | 45,750 | Grass |
| Melgar | Arequipa | Mariano Melgar | 20,000 | Grass |
| Sport Boys | Callao | Miguel Grau | 18,000 | Grass |
| Sporting Cristal | Lima | San Martín de Porres | 17,000 | Grass |
| Unión Minas | Cerro de Pasco | Daniel Alcides Carrión | 8,000 | Grass |
| Universitario | Lima | Nacional | 45,750 | Grass |
Torneo Apertura
Torneo Clausura
Clausura title play-off
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Sporting Cristal Clausura 1998 winners
To Copa Libertadores 1999
Copa CONMEBOL play-off
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Alianza Lima to 1999 Copa CONMEBOL
Season finals
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Aggregate table
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Municipal remained in Primera División PeruanaTop scorers
;25 goals
;19 goals
;17 goals
- Roberto Farfán
- Sergio Ibarra
;16 goals
- Andrés Gonzales
- Jorge Soto
