| 1. Round | 24/07/1991 | FC Aarau | - | Grasshopper Club Zürich | 4:0 |  |
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| 2. Round | 27/07/1991 | FC Sion | - | FC Aarau | 1:1 |  |
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| 3. Round | 03/08/1991 | FC Aarau | - | Lausanne Sports | 0:3 | ||||
| 4. Round | 06/08/1991 | BSC Young Boys | - | FC Aarau | 5:0 | ||||
| 7. Round | 24/08/1991 | FC Aarau | - | FC Lugano | 0:0 | ||||
| 8. Round | 28/08/1991 | Servette FC | - | FC Aarau | 2:2 | |
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| 9. Round | 31/08/1991 | FC Aarau | - | FC St. Gallen | 1:2 | ||||
| 10. Round | 04/09/1991 | FC Aarau | - | FC Zürich | 1:3 | ||||
| 11. Round | 14/09/1991 | Neuchâtel Xamax FC | - | FC Aarau | 1:0 | ||||
| 12. Round | 21/09/1991 | Grasshopper Club Zürich | - | FC Aarau | 3:1 | |
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| 13. Round | 05/10/1991 | FC Aarau | - | FC Sion | 2:2 | |
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| 15. Round | 15/10/1991 | FC Aarau | - | BSC Young Boys | 1:4 | |
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| 16. Round | 19/10/1991 | FC Luzern | - | FC Aarau | 0:0 | ||||
| 17. Round | 26/10/1991 | FC Aarau | - | FC Wettingen | 2:0 | ||||
| 14. Round | 30/10/1991 | Lausanne Sports | - | FC Aarau | 5:0 | ||||
| 18. Round | 03/11/1991 | FC Lugano | - | FC Aarau | 1:1 | ||||
| 19. Round | 17/11/1991 | FC Aarau | - | Servette FC | 0:1 | ||||
| 20. Round | 24/11/1991 | FC St. Gallen | - | FC Aarau | 2:0 | ||||
| 21. Round | 01/12/1991 | FC Zürich | - | FC Aarau | 0:0 | ||||
| 22. Round | 07/12/1991 | FC Aarau | - | Neuchâtel Xamax FC | 1:2 | |
Switzerland