| 2 Feb 1973 – 6 Jun 1973|
| Independiente (4th title)|
Club Atlético Independiente
1975 Copa Libertadores, 1972 Copa Libertadores, 1965 Copa Libertadores, 1969 Copa Libertadores, 1964 Copa Libertadores
The Venezuelan club teams Deportivo Italia and Deportivo Galicia did not participate in the Copa Libertadores due to internal problems with the Venezuelan footballing federation.
The five previous group leaders formed two new groups of three which included the 1972 Copa Libertadores defending champion Independiente.
1973 Copa Libertadores Wikipedia
Copa Libertadores 1973 was won by defending champions Independiente of Argentina after defeating Colo Colo of Chile in a third decisive game. The third match which ended 2-1 in extra time was necessary after the previous two leg matches ended in draws.