The Salvadoran Primera División de Fútbol Profesional Apertura 2003 season (officially "Torneo Apertura 2003") started on August 2, 2003.

The season was composed of the following clubs: Last updated August 2, 2003

This is a list of foreign players in Apertura 2003.

Atletico Balboa Arcense Chalatenango (player released mid season) (player Injured mid season) Injury replacement player

Luis Ángel Firpo A.D. Isidro Metapán Municipal Limeno San Salvador F.C.