2003 South American U-20 Championship squads

Below are the rosters for the 2003 South American Youth Championship tournament held in Uruguay. The ten national teams involved in the tournament were required to register a squad of 20 players; only players in these squads were eligible to take part in the tournament.

Players' names marked in bold have been capped at full international level.

Argentina
Coach: Hugo Tocalli 🇦🇷

Brazil
Coach: Marcos Paqueta 🇧🇷

Chile
Coach: Cesar Vaccia

(Source for player names: )

Ecuador
Coach: Fabián Burbano 🇪🇨

(Source for player names: )

Paraguay
Coach: Aníbal Ruiz

Uruguay
Coach: Jorge Orosmán da Silva

(Source for player names: )