| 8. Round | 07/04/2023 | Wexford FC | - | Galway United | 0:4 | ||||
| 10. Round | 21/04/2023 | Kerry FC | - | Galway United | 1:4 | ||||
| 15. Round | 19/05/2023 | Treaty United | - | Galway United | 0:3 | ||||
| 16. Round | 26/05/2023 | Galway United | - | Athlone Town | 3:1 | ||||
| 18. Round | 05/06/2023 | Galway United | - | Finn Harps | 6:0 | ||||
| 19. Round | 09/06/2023 | Wexford FC | - | Galway United | 0:2 |  |
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| 24. Round | 28/07/2023 | Galway United | - | Bray Wanderers | 3:0 | ||||
| 25. Round | 04/08/2023 | Finn Harps | - | Galway United | 2:2 | ||||
| 27. Round | 11/08/2023 | Waterford FC | - | Galway United | 2:2 | |
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| 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 | ||||
| 34. Round | 10/10/2023 | Galway United | - | Waterford FC | 3:1 | |
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| 35. Round | 14/10/2023 | Treaty United | - | Galway United | 1:4 | ||||
| 36. Round | 20/10/2023 | Galway United | - | Wexford FC | 2:0 |
Ireland