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| 1st(1st leg) | ÍA Akranes | - | Aberdeen FC | 1:2 (1:2) | ||
| 2nd (2nd leg) | Aberdeen FC | - | ÍA Akranes | 1:1 (0:0) | ||
| 1st(1st leg): 14/09/1983 | 2nd (2nd leg): 28/09/1983 | Winner: Aberdeen FC | ||||
| 1st(1st leg) | Juventus | - | Lechia Gdańsk | 7:0 (4:0) | ||
| 2nd (2nd leg) | Lechia Gdańsk | - | Juventus | 2:3 (0:1) | ||
| 1st(1st leg): 14/09/1983 | 2nd (2nd leg): 28/09/1983 | Winner: Juventus | ||||
| 1st(1st leg) | SSW Innsbruck | - | 1. FC Köln | 1:0 (0:0) | ||
| 2nd (2nd leg) | 1. FC Köln | - | SSW Innsbruck | 7:1 (4:1) | ||
| 1st(1st leg): 14/09/1983 | 2nd (2nd leg): 28/09/1983 | Winner: 1. FC Köln | ||||
| 1st(1st leg) | 1. FC Magdeburg | - | FC Barcelona | 1:5 (0:2) | ||
| 2nd (2nd leg) | FC Barcelona | - | 1. FC Magdeburg | 2:0 (1:0) | ||
| 1st(1st leg): 14/09/1983 | 2nd (2nd leg): 28/09/1983 | Winner: FC Barcelona | ||||
| 1st(1st leg) | Enosis Neon Paralimni | - | KSK Beveren | 2:4 (1:2) | ||
| 2nd (2nd leg) | KSK Beveren | - | Enosis Neon Paralimni | 3:1 (3:0) | ||
| 1st(1st leg): 14/09/1983 | 2nd (2nd leg): 28/09/1983 | Winner: KSK Beveren | ||||
| 1st(1st leg) | Dinamo Zagreb | - | FC Porto | 2:1 (1:0) | ||
| 2nd (2nd leg) | FC Porto | - | Dinamo Zagreb | 1:0 (0:0) | ||
| 1st(1st leg): 14/09/1983 | 2nd (2nd leg): 28/09/1983 | Winner: FC Porto | ||||
| 1st(1st leg) | Mersin Idmanyurdu | - | Spartak Varna | 0:0 (0:0) | ||
| 2nd (2nd leg) | Spartak Varna | - | Mersin Idmanyurdu | 1:0 (0:0) | ||
| 1st(1st leg): 14/09/1983 | 2nd (2nd leg): 28/09/1983 | Winner: Spartak Varna | ||||
| 1st(1st leg) | Manchester United | - | ASVS Dukla Praha | 1:1 (0:0) | ||
| 2nd (2nd leg) | ASVS Dukla Praha | - | Manchester United | 2:2 (1:1) | ||
| 1st(1st leg): 14/09/1983 | 2nd (2nd leg): 27/09/1983 | Winner: Manchester United | ||||
| 1st(1st leg) | Servette FC | - | Avenir Beggen | 4:0 (1:0) | ||
| 2nd (2nd leg) | Avenir Beggen | - | Servette FC | 1:5 (0:2) | ||
| 1st(1st leg): 14/09/1983 | 2nd (2nd leg): 27/09/1983 | Winner: Servette FC | ||||
| 1st(1st leg) | NEC Nijmegen | - | SK Brann | 1:1 (1:0) | ||
| 2nd (2nd leg) | SK Brann | - | NEC Nijmegen | 0:1 (0:1) | ||
| 1st(1st leg): 14/09/1983 | 2nd (2nd leg): 28/09/1983 | Winner: NEC Nijmegen | ||||
| 1st(1st leg) | Valletta FC | - | Rangers FC | 0:8 (0:6) | ||
| 2nd (2nd leg) | Rangers FC | - | Valletta FC | 10:0 (5:0) | ||
| 1st(1st leg): 14/09/1983 | 2nd (2nd leg): 28/09/1983 | Winner: Rangers FC | ||||
| 1st(1st leg) | AEK Athen | - | Újpesti Dózsa SC | 2:0 (0:0) | ||
| 2nd (2nd leg) | Újpesti Dózsa SC | - | AEK Athen | 4:1 (3:1) | ||
| 1st(1st leg): 14/09/1983 | 2nd (2nd leg): 28/09/1983 | Winner: Újpesti Dózsa SC | ||||
| 1st(1st leg) | Sligo Rovers | - | Haka Valkeakoski | 0:1 (0:1) | ||
| 2nd (2nd leg) | Haka Valkeakoski | - | Sligo Rovers | 3:0 (0:0) | ||
| 1st(1st leg): 14/09/1983 | 2nd (2nd leg): 28/09/1983 | Winner: Haka Valkeakoski | ||||
| 1st(1st leg) | B1901 Nyköbing | - | Shakhtyor Donetsk | 1:5 (0:3) | ||
| 2nd (2nd leg) | Shakhtyor Donetsk | - | B1901 Nyköbing | 4:2 (2:1) | ||
| 1st(1st leg): 14/09/1983 | 2nd (2nd leg): 28/09/1983 | Winner: Shakhtyor Donetsk | ||||
| 1st(1st leg) | Hammarby IF | - | Nentori Tiranë | 4:0 (2:0) | ||
| 2nd (2nd leg) | Nentori Tiranë | - | Hammarby IF | 2:1 (0:0) | ||
| 1st(1st leg): 14/09/1983 | 2nd (2nd leg): 28/09/1983 | Winner: Hammarby IF | ||||
| 1st(1st leg) | Glentoran FC | - | Paris Saint-Germain | 1:2 (0:0) | ||
| 2nd (2nd leg) | Paris Saint-Germain | - | Glentoran FC | 2:1 (0:1) | ||
| 1st(1st leg): 14/09/1983 | 2nd (2nd leg): 28/09/1983 | Winner: Paris Saint-Germain | ||||
