| Tourney Name: | South American Championship |
| Country: | Chile |
| Year: | 1945 |
| Teams: | 7 |
| Dates: | 14 January – 28 February |
| Num Teams: | 7 |
| Confederations: | 1 |
| Venues: | 1 |
| Cities: | 1 |
| Champion: | Argentina |
| Count: | 7 |
| Second: | Brazil |
| Second-Flagvar: | 1889 |
| Third: | Chile |
| Fourth: | Uruguay |
| Matches: | 21 |
| Goals: | 89 |
| Top Scorer: |  Heleno de Freitas  Norberto Méndez (6 goals each) |
| Prevseason: | 1942 |
| Nextseason: | 1946 |
The eighteenth edition of the South American Championship was held in Santiago, Chile from 14 January to 28 February. This tournament was an extra edition, with no trophy handed to the winners, but considered official by CONMEBOL.
The participating countries were Argentina, Bolivia, Brazil, Chile, Colombia (for the first time), Ecuador, and Uruguay. Paraguay and Peru withdrew from the tournament.
For a complete list of participating squads see: 1945 South American Championship squads
| Santiago | |
|---|---|
| Estadio Nacional de Chile | |
| Capacity: 70,000 | |
Each team played against each of the other teams. Two points were awarded for a win, one point for a draw and zero points for a defeat.
| width=165 | Team | width=20 | width=20 | width=20 | width=20 | width=20 | width=20 | width=20 | width=20 | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| align=left | 6 | 5 | 1 | 0 | 22 | 5 | +17 | 11 | |||||||||
| align=left | 6 | 5 | 0 | 1 | 19 | 5 | +14 | 10 | |||||||||
| align=left | 6 | 4 | 1 | 1 | 15 | 5 | +10 | 9 | |||||||||
| align=left | 6 | 3 | 0 | 3 | 14 | 6 | +8 | 6 | |||||||||
| align=left | 6 | 1 | 1 | 4 | 7 | 25 | −18 | 3 | |||||||||
| align=left | 6 | 0 | 2 | 4 | 3 | 16 | −13 | 2 | |||||||||
| align=left | 6 | 0 | 1 | 5 | 9 | 27 | −18 | 1 |
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6 goals
5 goals
Ademir
Juan Alcántara
Atilio García4 goals
Rinaldo Martino René Pontoni Guillermo Clavero
Víctor Aguayo3 goals
Desiderio Medina Roberto Porta2 goals
Vicente de la Mata Ferraro Loustau Jair Zizinho
Roberto Gámez González Rubio Fulgencio Berdugo1 goal
Mario Boyé Manuel Pelegrina Jaime Jorginho Rui Tesourinha Francisco Hormazábal Manuel Piñeiro Erasmo Vera Arturo Mendoza Guillermo Albornoz José L. Mendoza José M. Jiménez Luis A. Mendoza Enrique Raymondi Nicolás Falero José M. Ortiz Juan P. Riephoff Varela