| 2. Round | 19/08/2017 | Connah's Quay Nomads | - | Carmarthen Town | 3:1 | ||||
| 3. Round | 26/08/2017 | Newtown AFC | - | Carmarthen Town | 4:1 | ||||
| 9. Round | 14/10/2017 | Carmarthen Town | - | Connah's Quay Nomads | 1:2 | ||||
| 10. Round | 21/10/2017 | Cefn Druids | - | Carmarthen Town | 0:0 | ||||
| 11. Round | 28/10/2017 | Carmarthen Town | - | Bala Town | 0:1 |  |
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| 12. Round | 04/11/2017 | Cardiff Metropolitan | - | Carmarthen Town | 5:0 | ||||
| 13. Round | 11/11/2017 | Carmarthen Town | - | Newtown AFC | 0:2 | |
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| 14. Round | 18/11/2017 | Carmarthen Town | - | Prestatyn Town | 0:3 | ||||
| 16. Round | 09/12/2017 | Carmarthen Town | - | Llandudno FC | 0:0 | ||||
| 17. Round | 15/12/2017 | Carmarthen Town | - | Barry Town United | 1:2 | |
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| 18. Round | 23/12/2017 | Carmarthen Town | - | Bangor City | 0:0 | ||||
| 19. Round | 26/12/2017 | Carmarthen Town | - | Aberystwyth Town | 1:0 | ||||
| 20. Round | 01/01/2018 | Aberystwyth Town | - | Carmarthen Town | 1:2 |
England