| 1. Round | 03/10/2020 | Sutton United | - | Maidenhead United | 3:0 | ||||
| 2. Round | 06/10/2020 | Aldershot Town | - | Sutton United | 1:2 | ||||
| 3. Round | 10/10/2020 | Weymouth FC | - | Sutton United | 0:1 | ||||
| 4. Round | 13/10/2020 | Sutton United | - | Notts County | 0:1 | ||||
| 6. Round | 27/10/2020 | Yeovil Town | - | Sutton United | 1:2 |  |
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| 7. Round | 24/11/2020 | Wrexham AFC | - | Sutton United | 4:0 | ||||
| 11. Round | 28/11/2020 | Sutton United | - | Halifax Town | 1:0 | ||||
| 12. Round | 01/12/2020 | Woking FC | - | Sutton United | 0:1 | ||||
| 13. Round | 05/12/2020 | Sutton United | - | Solihull Moors | 4:1 | ||||
| 14. Round | 08/12/2020 | Sutton United | - | Chesterfield FC | 0:1 | |
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| 15. Round | 02/02/2021 | Stockport County | - | Sutton United | 0:2 | |
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| 26. Round | 20/02/2021 | Sutton United | - | Wealdstone FC | 4:1 | ||||
| 16. Round | 23/03/2021 | Bromley FC | - | Sutton United | 1:3 | ||||
| 42. Round | 04/05/2021 | Notts County | - | Sutton United | 3:2 | ||||
| 43. Round | 08/05/2021 | Sutton United | - | Weymouth FC | 2:0 | ||||
| 24. Round | 11/05/2021 | Sutton United | - | Woking FC | 3:2 | ||||
| 46. Round | 29/05/2021 | Barnet FC | - | Sutton United | 2:0 |
England