| 21. Round | 05/07/2017 | Bohemian FC | - | Dundalk FC | 0:1 | ||||
| 23. Round | 23/07/2017 | Dundalk FC | - | Shamrock Rovers | 0:1 | ||||
| 24. Round | 29/07/2017 | Sligo Rovers | - | Dundalk FC | 1:1 | ||||
| 25. Round | 04/08/2017 | Dundalk FC | - | Limerick FC | 3:0 |  |
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| 27. Round | 01/09/2017 | Dundalk FC | - | St Patrick's Athletic | 6:0 |  |
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| 29. Round | 22/09/2017 | Dundalk FC | - | Drogheda United | 3:0 | ||||
| 28. Round | 25/09/2017 | Cork City | - | Dundalk FC | 1:1 | ||||
| 30. Round | 07/10/2017 | Finn Harps | - | Dundalk FC | 0:2 | ||||
| 33. Round | 27/10/2017 | Galway United | - | Dundalk FC | 3:4 |
Ireland