Away History
| Wales League Cup | 2023/08/06 13:30 | Haverfordwest County v Cardiff U21 | W | 0-4 |
| Wales League Cup | 2023/07/21 18:30 | Cambrian United v Cardiff U21 | W | 5-6 |
| England Development League 2 | 2023/05/09 12:00 | Cardiff U21 v Crewe U21 | W | 4-2 |
| England Development League 2 | 2023/04/29 17:00 | Hull U21 v Cardiff U21 | L | 2-0 |
| England Development League 2 | 2023/04/25 13:00 | Cardiff U21 v Barnsley U21 | W | 3-1 |
| England Development League 2 | 2023/04/17 13:00 | Coventry U21 v Cardiff U21 | L | 3-0 |
| England Development League 2 | 2023/04/04 11:00 | Cardiff U21 v Sheffield Wed U21 | D | 1-1 |
| England Development League 2 | 2023/03/17 11:00 | Cardiff U21 v Ipswich U21 | W | 4-2 |