4. Round | 19/08/2023 | Colchester United | - | Milton Keynes Dons | 2:3 | ||||
5. Round | 26/08/2023 | Gillingham FC | - | Colchester United | 0:3 | ||||
6. Round | 02/09/2023 | Walsall FC | - | Colchester United | 1:0 | ||||
7. Round | 09/09/2023 | Colchester United | - | Tranmere Rovers | 2:0 | ||||
8. Round | 16/09/2023 | Colchester United | - | Mansfield Town | 1:1 | ||||
9. Round | 23/09/2023 | Crewe Alexandra | - | Colchester United | 2:1 | ||||
10. Round | 30/09/2023 | Colchester United | - | Notts County | 5:4 | ||||
11. Round | 03/10/2023 | Newport County | - | Colchester United | 2:1 | ||||
12. Round | 07/10/2023 | Colchester United | - | Morecambe FC | 1:3 | ||||
13. Round | 14/10/2023 | Forest Green Rovers | - | Colchester United | 5:0 | ||||
23. Round | 22/12/2023 | Colchester United | - | Salford City | 2:1 | ||||
24. Round | 26/12/2023 | Milton Keynes Dons | - | Colchester United | 1:0 | ||||
25. Round | 29/12/2023 | AFC Wimbledon | - | Colchester United | 5:3 |