The following are the squad lists for the countries that played in the 1959 South American Championship held in Ecuador, the second edition of the tournament contested twice in a year. The participating countries were Argentina, Brazil, Chile, Ecuador, Paraguay and Uruguay. Unlike the previous edition held that same year in Argentina, the participant teams brought reserve squads to the competition. Moreover, Brazilian roster included players from teams from Pernambuco state only, while Argentina brought younger or reserve players.