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| 1st(1st leg) | Dundalk FC | - | FC Zürich | 0:3 (0:1) | ||
| 2nd (2nd leg) | FC Zürich | - | Dundalk FC | 1:2 (0:1) | ||
| 1st(1st leg): 11/09/1963 | 2nd (2nd leg): 25/09/1963 | Winner: FC Zürich | ||||
| 1st(1st leg) | Partizan | - | Anorthosis Famagusta | 3:0 (0:0) | ||
| 2nd (2nd leg) | Anorthosis Famagusta | - | Partizan | 1:3 (1:1) | ||
| 1st(1st leg): 11/09/1963 | 2nd (2nd leg): 01/10/1963 | Winner: Partizan | ||||
| 1st(1st leg) | Lyn Oslo | - | Borussia Dortmund | 2:4 (2:1) | ||
| 2nd (2nd leg) | Borussia Dortmund | - | Lyn Oslo | 3:1 (1:0) | ||
| 1st(1st leg): 11/09/1963 | 2nd (2nd leg): 02/10/1963 | Winner: Borussia Dortmund | ||||
| 1st(1st leg) | FK Partizani | - | Spartak Plovdiv | 1:0 (1:0) | ||
| 2nd (2nd leg) | Spartak Plovdiv | - | FK Partizani | 3:1 (2:1) | ||
| 1st(1st leg): 11/09/1963 | 2nd (2nd leg): 02/10/1963 | Winner: Spartak Plovdiv | ||||
| 1st(1st leg) | Galatasaray | - | Ferencvárosi TC | 4:0 (1:0) | ||
| 2nd (2nd leg) | Ferencvárosi TC | - | Galatasaray | 2:0 (1:0) | ||
| 1st(1st leg): 11/09/1963 | 2nd (2nd leg): 12/10/1963 | Winner: Galatasaray | ||||
| 1st(1st leg) | AS Dukla Praha | - | Valletta FC | 6:0 (2:0) | ||
| 2nd (2nd leg) | Valletta FC | - | AS Dukla Praha | 0:2 (0:0) | ||
| 1st(1st leg): 15/09/1963 | 2nd (2nd leg): 29/09/1963 | Winner: AS Dukla Praha | ||||
| 1st(1st leg) | Dinamo Bucureşti | - | SC Motor Jena | 2:0 (1:0) | ||
| 2nd (2nd leg) | SC Motor Jena | - | Dinamo Bucureşti | 0:1 (0:0) | ||
| 1st(1st leg): 18/09/1963 | 2nd (2nd leg): 25/09/1963 | Winner: Dinamo Bucureşti | ||||
| 1st(1st leg) | Everton FC | - | Inter | 0:0 (0:0) | ||
| 2nd (2nd leg) | Inter | - | Everton FC | 1:0 (0:0) | ||
| 1st(1st leg): 18/09/1963 | 2nd (2nd leg): 25/09/1963 | Winner: Inter | ||||
| 1st(1st leg) | Górnik Zabrze | - | Austria Wien | 1:0 (0:0) | ||
| 2nd (2nd leg) | Austria Wien | - | Górnik Zabrze | 1:0 (0:0) | ||
| 1st(1st leg): 18/09/1963 | 2nd (2nd leg): 02/10/1963 | |||||
| 1st(1st leg) | AS Monaco | - | AEK Athen | 7:2 (5:0) | ||
| 2nd (2nd leg) | AEK Athen | - | AS Monaco | 1:1 (0:0) | ||
| 1st(1st leg): 18/09/1963 | 2nd (2nd leg): 02/10/1963 | Winner: AS Monaco | ||||
| 1st(1st leg) | Belfast Distillery | - | SL Benfica | 3:3 (2:1) | ||
| 2nd (2nd leg) | SL Benfica | - | Belfast Distillery | 5:0 (2:0) | ||
| 1st(1st leg): 25/09/1963 | 2nd (2nd leg): 02/10/1963 | Winner: SL Benfica | ||||
| 1st(1st leg) | Standard Liège | - | IFK Norrköping | 1:0 (1:0) | ||
| 2nd (2nd leg) | IFK Norrköping | - | Standard Liège | 2:0 (1:0) | ||
| 1st(1st leg): 25/09/1963 | 2nd (2nd leg): 03/10/1963 | Winner: IFK Norrköping | ||||
| 1st(1st leg) | Esbjerg fB | - | PSV Eindhoven | 3:4 (2:1) | ||
| 2nd (2nd leg) | PSV Eindhoven | - | Esbjerg fB | 7:1 (4:1) | ||
| 1st(1st leg): 25/09/1963 | 2nd (2nd leg): 09/10/1963 | Winner: PSV Eindhoven | ||||
| 1st(1st leg) | Rangers FC | - | Real Madrid | 0:1 (0:0) | ||
| 2nd (2nd leg) | Real Madrid | - | Rangers FC | 6:0 (4:0) | ||
| 1st(1st leg): 25/09/1963 | 2nd (2nd leg): 09/10/1963 | Winner: Real Madrid | ||||
| 1st(1st leg) | Haka Valkeakoski | - | Jeunesse Esch | 4:1 (2:1) | ||
| 2nd (2nd leg) | Jeunesse Esch | - | Haka Valkeakoski | 4:0 (2:0) | ||
| 1st(1st leg): 25/09/1963 | 2nd (2nd leg): 09/10/1963 | Winner: Jeunesse Esch | ||||
| decisive matches | ||||||
|---|---|---|---|---|---|---|
| Austria Wien | - | Górnik Zabrze | 1:2 (0:2) | |||
