| 2. Ronde | 26.03.2021 | Dundalk FC | - | Finn Harps | 1:2 | ||||
| 4. Ronde | 09.04.2021 | Dundalk FC | - | Bohemian FC | 0:1 | ||||
| 5. Ronde | 17.04.2021 | Dundalk FC | - | St Patrick's Athletic | 1:1 | ||||
| 7. Ronde | 24.04.2021 | Dundalk FC | - | Drogheda United | 2:1 |  |
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| 10. Ronde | 07.05.2021 | Dundalk FC | - | Sligo Rovers | 0:1 | ||||
| 11. Ronde | 14.05.2021 | Finn Harps | - | Dundalk FC | 1:1 | ||||
| 18. Ronde | 25.06.2021 | Dundalk FC | - | Derry City | 2:1 | ||||
| 23. Ronde | 08.08.2021 | Dundalk FC | - | St Patrick's Athletic | 1:4 | ||||
| 25. Ronde | 20.08.2021 | Dundalk FC | - | Drogheda United | 1:2 |  |
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| 26. Ronde | 03.09.2021 | Waterford FC | - | Dundalk FC | 1:1 | |
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| 27. Ronde | 11.09.2021 | Longford Town | - | Dundalk FC | 1:0 |  |
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| 28. Ronde | 24.09.2021 | Dundalk FC | - | Sligo Rovers | 4:1 | ||||
| 20. Ronde | 27.09.2021 | Dundalk FC | - | Bohemian FC | 2:1 | ||||
| 30. Ronde | 08.10.2021 | Dundalk FC | - | Shamrock Rovers | 1:0 |
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