| 4. Round | 19/08/2023 | Northampton Town | - | Peterborough United | 1:0 | ||||
| 5. Round | 26/08/2023 | Cheltenham Town | - | Northampton Town | 0:1 | ||||
| 6. Round | 02/09/2023 | Northampton Town | - | Wycombe Wanderers | 0:1 | ||||
| 8. Round | 16/09/2023 | Port Vale FC | - | Northampton Town | 1:0 | ||||
| 10. Round | 30/09/2023 | Exeter City | - | Northampton Town | 0:2 | ||||
| 11. Round | 03/10/2023 | Northampton Town | - | Reading FC | 3:1 | ||||
| 12. Round | 07/10/2023 | Shrewsbury Town | - | Northampton Town | 1:0 | ||||
| 14. Round | 21/10/2023 | Bolton Wanderers | - | Northampton Town | 2:1 | ||||
| 15. Round | 24/10/2023 | Northampton Town | - | Leyton Orient | 2:2 | ||||
| 26. Round | 01/01/2024 | Northampton Town | - | Cheltenham Town | 1:0 | ||||
| 30. Round | 27/01/2024 | Northampton Town | - | Shrewsbury Town | 0:2 | ||||
| 31. Round | 03/02/2024 | Portsmouth FC | - | Northampton Town | 4:1 | ||||
| 32. Round | 10/02/2024 | Northampton Town | - | Bolton Wanderers | 1:1 | ||||
| 33. Round | 13/02/2024 | Leyton Orient | - | Northampton Town | 4:3 | ||||
| 37. Round | 09/03/2024 | Cambridge United | - | Northampton Town | 1:1 | ||||
| 38. Round | 12/03/2024 | Northampton Town | - | Blackpool FC | 0:1 |
England