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| 1st(1st leg) | ÍB Keflavík | - | Ferencvárosi TC | 1:4 (0:3) | ||
| 2nd (2nd leg) | Ferencvárosi TC | - | ÍB Keflavík | 9:1 (6:1) | ||
| 1st(1st leg): 29/08/1965 | 2nd (2nd leg): 08/09/1965 | Winner: Ferencvárosi TC | ||||
| 1st(1st leg) | Lyn Oslo | - | Derry City | 5:3 (3:3) | ||
| 2nd (2nd leg) | Derry City | - | Lyn Oslo | 5:1 (2:1) | ||
| 1st(1st leg): 31/08/1965 | 2nd (2nd leg): 09/09/1965 | Winner: Derry City | ||||
| 1st(1st leg) | Fenerbahçe | - | RSC Anderlecht | 0:0 (0:0) | ||
| 2nd (2nd leg) | RSC Anderlecht | - | Fenerbahçe | 5:1 (2:0) | ||
| 1st(1st leg): 08/09/1965 | 2nd (2nd leg): 15/09/1965 | Winner: RSC Anderlecht | ||||
| 1st(1st leg) | Feijenoord | - | Real Madrid | 2:1 (0:1) | ||
| 2nd (2nd leg) | Real Madrid | - | Feijenoord | 5:0 (4:0) | ||
| 1st(1st leg): 08/09/1965 | 2nd (2nd leg): 22/09/1965 | Winner: Real Madrid | ||||
| 1st(1st leg) | Nentori Tiranë | - | Kilmarnock FC | 0:0 (0:0) | ||
| 2nd (2nd leg) | Kilmarnock FC | - | Nentori Tiranë | 1:0 (0:0) | ||
| 1st(1st leg): 08/09/1965 | 2nd (2nd leg): 29/09/1965 | Winner: Kilmarnock FC | ||||
| 1st(1st leg) | Djurgårdens IF | - | Levski Sofia | 2:1 (1:1) | ||
| 2nd (2nd leg) | Levski Sofia | - | Djurgårdens IF | 6:0 (4:0) | ||
| 1st(1st leg): 12/09/1965 | 2nd (2nd leg): 03/10/1965 | Winner: Levski Sofia | ||||
| 1st(1st leg) | Drumcondra Dublin | - | ASK Vorwärts Berlin | 1:0 (0:0) | ||
| 2nd (2nd leg) | ASK Vorwärts Berlin | - | Drumcondra Dublin | 3:0 (1:0) | ||
| 1st(1st leg): 15/09/1965 | 2nd (2nd leg): 22/10/1965 | Winner: ASK Vorwärts Berlin | ||||
| 1st(1st leg) | Linzer ASK | - | Górnik Zabrze | 1:3 (0:2) | ||
| 2nd (2nd leg) | Górnik Zabrze | - | Linzer ASK | 2:1 (2:1) | ||
| 1st(1st leg): 15/09/1965 | 2nd (2nd leg): 22/10/1965 | Winner: Górnik Zabrze | ||||
| 1st(1st leg) | Lausanne Sports | - | TJ Sparta ČKD Praha | 0:0 (0:0) | ||
| 2nd (2nd leg) | TJ Sparta ČKD Praha | - | Lausanne Sports | 4:0 (2:0) | ||
| 1st(1st leg): 22/09/1965 | 2nd (2nd leg): 29/09/1965 | Winner: TJ Sparta ČKD Praha | ||||
| 1st(1st leg) | HJK Helsinki | - | Manchester United | 2:3 (1:3) | ||
| 2nd (2nd leg) | Manchester United | - | HJK Helsinki | 6:0 (2:0) | ||
| 1st(1st leg): 22/09/1965 | 2nd (2nd leg): 06/10/1965 | Winner: Manchester United | ||||
| 1st(1st leg) | Partizan | - | FC Nantes | 2:0 (1:0) | ||
| 2nd (2nd leg) | FC Nantes | - | Partizan | 2:2 (1:1) | ||
| 1st(1st leg): 22/09/1965 | 2nd (2nd leg): 13/10/1965 | Winner: Partizan | ||||
| 1st(1st leg) | Panathinaikos | - | Sliema Wanderers | 4:1 (2:1) | ||
| 2nd (2nd leg) | Sliema Wanderers | - | Panathinaikos | 1:0 (1:0) | ||
| 1st(1st leg): 26/09/1965 | 2nd (2nd leg): 10/10/1965 | Winner: Panathinaikos | ||||
| 1st(1st leg) | Dinamo Bucureşti | - | B 1909 Odense | 4:0 (0:0) | ||
| 2nd (2nd leg) | B 1909 Odense | - | Dinamo Bucureşti | 2:3 (2:3) | ||
| 1st(1st leg): 28/09/1965 | 2nd (2nd leg): 06/10/1965 | Winner: Dinamo Bucureşti | ||||
| 1st(1st leg) | Stade Dudelange | - | SL Benfica | 0:8 (0:3) | ||
| 2nd (2nd leg) | SL Benfica | - | Stade Dudelange | 10:0 (5:0) | ||
| 1st(1st leg): 30/09/1965 | 2nd (2nd leg): 05/10/1965 | Winner: SL Benfica | ||||
| 1st(1st leg) | APOEL Nikosia | - | Werder Bremen | 0:5 (0:4) | ||
| 2nd (2nd leg) | Werder Bremen | - | APOEL Nikosia | 5:0 (2:0) | ||
| 1st(1st leg): 06/10/1965 | 2nd (2nd leg): 13/10/1965 | Winner: Werder Bremen | ||||
