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| H (Match allé) | Santos FC | - | Cienciano | 1:1 (0:0) | ||
| R (match retour) | Cienciano | - | Santos FC | 2:1 (2:1) | ||
| H (Match allé): 16.10.2003 | R (match retour): 29.10.2003 | vainqueur: Cienciano | ||||
| H (Match allé) | Boca Juniors | - | Atlético Nacional | 0:1 (0:0) | ||
| R (match retour) | Atlético Nacional | - | Boca Juniors | 4:1 (2:1) | ||
| H (Match allé): 22.10.2003 | R (match retour): 05.11.2003 | vainqueur: Atlético Nacional | ||||
| H (Match allé) | River Plate | - | Libertad | 2:0 (1:0) | ||
| R (match retour) | Libertad | - | River Plate | 1:0 (0:0) | ||
| H (Match allé): 23.10.2003 | R (match retour): 05.11.2003 | vainqueur: River Plate | ||||
| H (Match allé) | The Strongest | - | São Paulo FC | 1:4 (0:1) | ||
| R (match retour) | São Paulo FC | - | The Strongest | 3:1 (3:1) | ||
| H (Match allé): 29.10.2003 | R (match retour): 12.11.2003 | vainqueur: São Paulo FC | ||||
