The 2005 Torneo Descentralizado (known as the Copa Cable Mágico for sponsorship reasons) was the eighty-ninth season of Peruvian football. A total of 12 teams competed in the tournament. Sporting Cristal won its fifteenth Primera División title after beating Cienciano in the season final. The season started on March 5, 2005, ended on December 21, 2005.

Changes from 2004

Structural changes

Starting with the 2004 season, the two relegated teams will be able to choose to play in the Segunda División or drop to their regional league as the Segunda División will now be played with non-capital teams. The number of first division teams dropped from 14 to 13.

Promotion and relegation

Deportivo Wanka and Grau–Estudiantes finished the 2004 season in 13th and 14th place, respectively, on the three-season average table and thus were relegated to their regional league. They were replaced by the champion of the 2004 Copa Perú Sport Áncash.

Team changes

Teams

Torneo Apertura

Results

Torneo Clausura

Results

Final

Aggregate table

Relegation table

Updated as of games played on December, 2005.

Top scorers