| 1. Round | 18/02/2023 | Longford Town | - | Athlone Town | 1:3 | ||||
| 5. Round | 18/03/2023 | Longford Town | - | Finn Harps | 0:1 | ||||
| 6. Round | 24/03/2023 | Galway United | - | Longford Town | 1:0 | ||||
| 15. Round | 19/05/2023 | Wexford FC | - | Longford Town | 0:3 | ||||
| 18. Round | 05/06/2023 | Cobh Ramblers | - | Longford Town | 1:0 | ||||
| 19. Round | 09/06/2023 | Longford Town | - | Finn Harps | 2:3 | ||||
| 20. Round | 23/06/2023 | Galway United | - | Longford Town | 4:0 |  |
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| 21. Round | 01/07/2023 | Longford Town | - | Wexford FC | 2:1 | ||||
| 26. Round | 07/08/2023 | Bray Wanderers | - | Longford Town | 2:4 | ||||
| 27. Round | 12/08/2023 | Longford Town | - | Athlone Town | 2:3 | ||||
| 28. Round | 25/08/2023 | Finn Harps | - | Longford Town | 0:1 | ||||
| 29. Round | 02/09/2023 | Longford Town | - | Galway United | 1:0 | ||||
| 30. Round | 08/09/2023 | Kerry FC | - | Longford Town | 0:0 | |
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| 32. Round | 22/09/2023 | Longford Town | - | Waterford FC | 0:3 | ||||
| 31. Round | 25/09/2023 | Wexford FC | - | Longford Town | 2:0 | ||||
| 33. Round | 30/09/2023 | Longford Town | - | Treaty United | 2:3 | ||||
| 34. Round | 06/10/2023 | Cobh Ramblers | - | Longford Town | 2:0 | ||||
| 35. Round | 14/10/2023 | Longford Town | - | Bray Wanderers | 2:2 |
Ireland