See main article: 2003 South American Youth Championship.
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.
Coach: Hugo Tocalli
Coach: Marcos Paqueta
(Source for player names:[1])
Coach: Fabián Burbano
(Source for player names:[2])
(Source for player names:[3])