| 17. Ronde | 16.02.2021 | Grasshopper Club Zürich | - | FC Aarau | 2:1 |  |
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| 21. Ronde | 19.02.2021 | Stade Lausanne-Ouchy | - | FC Aarau | 1:1 | ||||
| 20. Ronde | 23.02.2021 | FC Aarau | - | Neuchâtel Xamax FCS | 4:0 | ||||
| 22. Ronde | 26.02.2021 | FC Aarau | - | FC Winterthur | 0:0 | ||||
| 23. Ronde | 02.03.2021 | FC Aarau | - | FC Thun | 4:2 | ||||
| 24. Ronde | 05.03.2021 | FC Chiasso | - | FC Aarau | 2:0 | ||||
| 25. Ronde | 13.03.2021 | FC Aarau | - | FC Wil 1900 | 3:0 | ||||
| 26. Ronde | 19.03.2021 | Grasshopper Club Zürich | - | FC Aarau | 4:1 | ||||
| 27. Ronde | 03.04.2021 | FC Aarau | - | FC Schaffhausen | 1:0 | ||||
| 28. Ronde | 10.04.2021 | Neuchâtel Xamax FCS | - | FC Aarau | 0:1 | |
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| 29. Ronde | 16.04.2021 | FC Aarau | - | FC Chiasso | 3:1 | ||||
| 30. Ronde | 20.04.2021 | FC Wil 1900 | - | FC Aarau | 7:0 | ||||
| 32. Ronde | 30.04.2021 | FC Aarau | - | Grasshopper Club Zürich | 2:1 | ||||
| 33. Ronde | 08.05.2021 | FC Schaffhausen | - | FC Aarau | 3:2 | |
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| 35. Ronde | 14.05.2021 | FC Thun | - | FC Aarau | 1:3 | ||||
| 36. Ronde | 20.05.2021 | FC Aarau | - | Stade Lausanne-Ouchy | 0:3 |
Zwitserland