The 2011 South American U-20 Championship was an international football tournament held in Peru from 26 January to 6 February 2011. The ten national teams involved in the tournament were required to register a squad of twenty players; only players in these squads were eligible to take part in the tournament. Each national team had to present a list of players by 6 January 2011. Each player had to have been born after 1 January 1991. Players' names marked in bold have been capped at full international level.