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| I | Vitória Setúbal | - | RWD Molenbeek | 1:0 (0:0) | ||
| V | RWD Molenbeek | - | Vitória Setúbal | 2:1 (1:0) | ||
| I: 16.10.1973 23:50 | V: 07.11.1973 20:00 | Campeones: Vitória Setúbal | ||||
| I | Marsella | - | Colonia | 2:0 (0:0) | ||
| V | Colonia | - | Marsella | 6:0 (4:0) | ||
| I: 23.10.1973 20:30 | V: 06.11.1973 20:00 | Campeones: Colonia | ||||
| I | Dinamo Tbilisi | - | OFK Beograd | 3:0 (2:0) | ||
| V | OFK Beograd | - | Dinamo Tbilisi | 1:5 (0:3) | ||
| I: 24.10.1973 15:00 | V: 07.11.1973 13:30 | Campeones: Dinamo Tbilisi | ||||
| I | Lokomotiv Plovdiv | - | Budapest Honved SE | 3:4 (2:3) | ||
| V | Budapest Honved SE | - | Lokomotiv Plovdiv | 3:2 (1:0) | ||
| I: 24.10.1973 17:00 | V: 07.11.1973 13:30 | Campeones: Budapest Honved SE | ||||
| I | 1. FC Lokomotive Leipzig | - | Wolverhampton Wanderers | 3:0 (1:0) | ||
| V | Wolverhampton Wanderers | - | 1. FC Lokomotive Leipzig | 4:1 (0:0) | ||
| I: 24.10.1973 17:00 | V: 07.11.1973 20:30 | Campeones: 1. FC Lokomotive Leipzig | ||||
| I | Dinamo Kiev | - | B 1903 København | 1:0 (0:0) | ||
| V | B 1903 København | - | Dinamo Kiev | 1:2 (0:0) | ||
| I: 24.10.1973 18:00 | V: 07.11.1973 19:00 | Campeones: Dinamo Kiev | ||||
| I | Ruch Chorzów | - | FC Carl Zeiss Jena | 3:0 (1:0) | ||
| V | FC Carl Zeiss Jena | - | Ruch Chorzów | 1:0 (0:0) | ||
| I: 24.10.1973 18:00 | V: 07.11.1973 17:00 | Campeones: Ruch Chorzów | ||||
| I | Admira/Wacker | - | Fortuna Düsseldorf | 2:1 (0:1) | ||
| V | Fortuna Düsseldorf | - | Admira/Wacker | 3:0 (3:0) | ||
| I: 24.10.1973 19:00 | V: 06.11.1973 19:30 | Campeones: Fortuna Düsseldorf | ||||
| I | Stuttgart | - | TJ Tatran Prešov | 3:1 (0:1) | ||
| V | TJ Tatran Prešov | - | Stuttgart | 3:5 (1:1, 3:1) pró. | ||
| I: 24.10.1973 19:00 | V: 07.11.1973 13:30 | Campeones: Stuttgart | ||||
| I | Standard Liège | - | FC Universitatea Craiova | 2:0 (1:0) | ||
| V | FC Universitatea Craiova | - | Standard Liège | 1:1 (1:0) | ||
| I: 24.10.1973 20:00 | V: 07.11.1973 13:15 | Campeones: Standard Liège | ||||
| I | Aberdeen FC | - | Tottenham Hotspur | 1:1 (0:1) | ||
| V | Tottenham Hotspur | - | Aberdeen FC | 4:1 (2:0) | ||
| I: 24.10.1973 20:30 | V: 07.11.1973 20:30 | Campeones: Tottenham Hotspur | ||||
| I | Feyenoord | - | Gwardia Warszawa | 3:1 (0:1) | ||
| V | Gwardia Warszawa | - | Feyenoord | 1:0 (1:0) | ||
| I: 24.10.1973 20:30 | V: 06.11.1973 17:30 | Campeones: Feyenoord | ||||
| I | Ipswich Town | - | Lazio | 4:0 (2:0) | ||
| V | Lazio | - | Ipswich Town | 4:2 (2:0) | ||
| I: 24.10.1973 20:30 | V: 07.11.1973 21:00 | Campeones: Ipswich Town | ||||
| I | Leeds United | - | Hibernian FC | 0:0 (0:0) | ||
| V | Hibernian FC | - | Leeds United | 4:5 (0:0, 0:0, 0:0) pn. | ||
| I: 24.10.1973 20:30 | V: 07.11.1973 20:45 | Campeones: Leeds United | ||||
| I | Niza | - | Fenerbahçe | 4:0 (2:0) | ||
| V | Fenerbahçe | - | Niza | 2:0 (1:0) | ||
| I: 24.10.1973 20:30 | V: 07.11.1973 19:00 | Campeones: Niza | ||||
| I | Panachaiki GE | - | FC Twente '65 | 1:1 (1:1) | ||
| V | FC Twente '65 | - | Panachaiki GE | 7:0 (0:0) | ||
| I: 25.10.1973 14:30 | V: 08.11.1973 20:00 | Campeones: FC Twente '65 | ||||
