Original Walon football shirt Alianza Lima 1901-2001

Club Alianza Lima, is a Peruvian professional sports club based in La Victoria District of Lima, Peru. The club was founded under the name of Sport Alianza on 15 February 1901 by working-class youth in the Chacaritas neighborhood of Lima. It is widely known for having one of the most historical and successful football teams in Peru; they have won a total of 25 league titles of the Peruvian Primera División and are currently the oldest team playing in that competition, since the club was founded in 1901. It is considered the most popular club in Perú.

The 2001 Torneo Descentralizado, was the 85th season of the top category of Peruvian football (soccer). It was played by 12 teams. The national champion was Alianza Lima.

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 tournament played for the national title in a two-legged final. Should the same team have won both tournaments, they would have been automatic champions.

Qualification to CONMEBOL's Copa Libertadores was won by each tournament winner and the winner of a play-off between the teams that placed second in each tournament. The bottom team on the aggregate table was relegated, while the eleventh placed team played a relegation/promotion play-off against the winner of the Segunda División (Second Division).