| 13. Round | 05/05/2023 | Galway United | - | Waterford FC | 2:1 | ||||
| 16. Round | 26/05/2023 | Galway United | - | Athlone Town | 3:1 | ||||
| 17. Round | 02/06/2023 | Bray Wanderers | - | Galway United | 1:1 | ||||
| 18. Round | 05/06/2023 | Galway United | - | Finn Harps | 6:0 | ||||
| 19. Round | 09/06/2023 | Wexford FC | - | Galway United | 0:2 | ||||
| 20. Round | 23/06/2023 | Galway United | - | Longford Town | 4:0 | ||||
| 21. Round | 30/06/2023 | Galway United | - | Kerry FC | 1:0 | ||||
| 23. Round | 14/07/2023 | Athlone Town | - | Galway United | 0:1 | ||||
| 24. Round | 28/07/2023 | Galway United | - | Bray Wanderers | 3:0 | ||||
| 25. Round | 04/08/2023 | Finn Harps | - | Galway United | 2:2 | ||||
| 26. Round | 07/08/2023 | Galway United | - | Treaty United | 3:0 | ||||
| 27. Round | 11/08/2023 | Waterford FC | - | Galway United | 2:2 | ||||
| 28. Round | 25/08/2023 | Galway United | - | Cobh Ramblers | 4:1 |  |
|||
| 29. Round | 02/09/2023 | Longford Town | - | Galway United | 1:0 | ||||
| 31. Round | 25/09/2023 | Galway United | - | Finn Harps | 1:0 | |
|||
| 33. Round | 29/09/2023 | Galway United | - | Athlone Town | 6:0 |
Ireland