| 1. Round | 07/08/2021 | Cardiff City | - | Barnsley FC | 1:1 | ||||
| 2. Round | 14/08/2021 | Blackpool FC | - | Cardiff City | 0:2 |  |
|||
| 3. Round | 17/08/2021 | Peterborough United | - | Cardiff City | 2:2 | ||||
| 4. Round | 21/08/2021 | Cardiff City | - | Millwall FC | 3:1 | ||||
| 5. Round | 28/08/2021 | Cardiff City | - | Bristol City | 1:2 | ||||
| 8. Round | 18/09/2021 | Cardiff City | - | AFC Bournemouth | 0:1 |  |
|||
| 9. Round | 25/09/2021 | Blackburn Rovers | - | Cardiff City | 5:1 | ||||
| 10. Round | 28/09/2021 | Cardiff City | - | West Bromwich Albion | 0:4 | ||||
| 11. Round | 02/10/2021 | Cardiff City | - | Reading FC | 0:1 | ||||
| 12. Round | 17/10/2021 | Swansea City | - | Cardiff City | 3:0 | |
|||
| 15. Round | 30/10/2021 | Stoke City | - | Cardiff City | 3:3 | |
|||
| 17. Round | 06/11/2021 | Cardiff City | - | Huddersfield Town | 2:1 | |
|||
| 18. Round | 20/11/2021 | Preston North End | - | Cardiff City | 1:2 | ||||
| 19. Round | 24/11/2021 | Cardiff City | - | Hull City | 0:1 | ||||
| 25. Round | 30/12/2021 | AFC Bournemouth | - | Cardiff City | 3:0 |  |
Netherlands
