- Source: 1921 South American Championship squads
- Tim nasional sepak bola Brasil
- 1921 South American Championship squads
- 1921 South American Championship
- 1916 South American Championship squads
- 1963 South American Championship squads
- 1949 South American Championship squads
- 1957 South American Championship squads
- 1967 South American Championship squads
- 1947 South American Championship squads
- 1953 South American Championship squads
- 1920 South American Championship
These are the squads for the countries that played in the 1921 South American Championship. The participating countries were Argentina, Brazil, Chile and Uruguay. The teams plays in a single round-robin tournament, earning two points for a win, one point for a draw, and zero points for a loss.
Argentina
Head Coach: n/i
Brazil
Head coach: Ferreira Vianna Netto
Paraguay
Head Coach: José Durand Laguna
Uruguay
Head Coach: Ernesto Fígoli