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| 1st(1st leg) | SSC Napoli | - | AFC Ajax | 1:0 (1:0) | ||
| 2nd (2nd leg) | AFC Ajax | - | SSC Napoli | 4:0 (1:0, 1:0) aet | ||
| 1st(1st leg): 10/12/1969 | 2nd (2nd leg): 21/01/1970 | Winner: AFC Ajax | ||||
| 1st(1st leg) | Kilmarnock FC | - | Dinamo Bacau | 1:1 (0:0) | ||
| 2nd (2nd leg) | SC Bacau | - | Kilmarnock FC | 2:0 (1:0) | ||
| 1st(1st leg): 17/12/1969 | 2nd (2nd leg): 13/01/1970 | Winner: Dinamo Bacau | ||||
| 1st(1st leg) | FC Rouen 1899 | - | Arsenal FC | 0:0 (0:0) | ||
| 2nd (2nd leg) | Arsenal FC | - | FC Rouen 1899 | 1:0 (0:0) | ||
| 1st(1st leg): 17/12/1969 | 2nd (2nd leg): 13/01/1970 | Winner: Arsenal FC | ||||
| 1st(1st leg) | RSC Anderlecht | - | Dunfermline Athletic | 1:0 (1:0) | ||
| 2nd (2nd leg) | Dunfermline Athletic | - | RSC Anderlecht | 3:2 (1:0) | ||
| 1st(1st leg): 17/12/1969 | 2nd (2nd leg): 14/01/1970 | Winner: RSC Anderlecht | ||||
| 1st(1st leg) | Newcastle United | - | Southampton FC | 0:0 (0:0) | ||
| 2nd (2nd leg) | Southampton FC | - | Newcastle United | 1:1 (1:0) | ||
| 1st(1st leg): 17/12/1969 | 2nd (2nd leg): 14/01/1970 | Winner: Newcastle United | ||||
| 1st(1st leg) | Vitória Setúbal | - | Hertha BSC | 1:1 (1:1) | ||
| 2nd (2nd leg) | Hertha BSC | - | Vitória Setúbal | 1:0 (0:0) | ||
| 1st(1st leg): 30/12/1969 | 2nd (2nd leg): 07/01/1970 | Winner: Hertha BSC | ||||
| 1st(1st leg) | FC Carl Zeiss Jena | - | Újpesti Dózsa SC | 1:0 (0:0) | ||
| 2nd (2nd leg) | Újpesti Dózsa SC | - | FC Carl Zeiss Jena | 0:3 (0:2) | ||
| 1st(1st leg): 14/01/1970 | 2nd (2nd leg): 21/01/1970 | Winner: FC Carl Zeiss Jena | ||||
| 1st(1st leg) | FC Barcelona | - | Inter | 1:2 (1:2) | ||
| 2nd (2nd leg) | Inter | - | FC Barcelona | 1:1 (1:1) | ||
| 1st(1st leg): 14/01/1970 | 2nd (2nd leg): 04/02/1970 | Winner: Inter | ||||
