Head to Head
| England Development League 2 | 2025/01/24 13:00 | Charlton U21 v Cardiff U21 | W | 6-1 |
| England Development League 2 | 2024/10/05 13:00 | Cardiff U21 v Charlton U21 | L | 2-0 |
| England Development League 2 | 2024/02/20 14:00 | Cardiff U21 v Charlton U21 | L | 2-1 |
| England Development League 2 | 2023/11/27 14:00 | Charlton U21 v Cardiff U21 | D | 5-5 |
| England Development League 2 | 2023/02/28 14:00 | Cardiff U21 v Charlton U21 | W | 0-2 |
| England Development League 2 | 2022/11/10 13:00 | Charlton U21 v Cardiff U21 | W | 2-1 |
Home History
| Club Friendly List | 2025/07/19 14:00 | Oxford City v Charlton U21 | L | 5-2 |
| England Development League 2 | 2025/05/05 13:00 | Charlton U21 v Coventry U21 | L | 0-1 |
| England Development League 2 | 2025/04/29 12:30 | Peterborough U21 v Charlton U21 | W | 2-7 |
| England Development League 2 | 2025/04/15 13:00 | Charlton U21 v Birmingham U21 | W | 3-1 |
| England Development League 2 | 2025/04/11 13:00 | QPR U21 v Charlton U21 | D | 2-2 |
| England Development League 2 | 2025/04/08 12:00 | Fleetwood Town U21 v Charlton U21 | W | 0-4 |
| England Development League 2 | 2025/04/01 13:00 | Charlton U21 v Sheff Utd U21 | D | 1-1 |
| England U21 Premier League Cup | 2025/03/29 14:00 | Southampton U21 v Charlton U21 | D | 2-2 |
Away History
| Wales League Cup | 2025/08/01 18:30 | Cambrian United v Cardiff U21 | L | 2-0 |
| UK Friendlies | 2025/07/25 18:30 | Merthyr Town v Cardiff U21 | W | 4-6 |
| Wales League Cup | 2025/07/19 13:30 | Ammanford AFC v Cardiff U21 | D | 0-0 |
| UK Friendlies | 2025/07/15 18:30 | Yeovil v Cardiff U21 | W | 2-3 |
| England Development League 2 | 2025/05/06 13:00 | Cardiff U21 v Burnley U21 | L | 1-4 |
| England Development League 2 | 2025/05/02 13:00 | Cardiff U21 v Watford U21 | W | 3-1 |
| England Development League 2 | 2025/04/29 11:00 | Hull U21 v Cardiff U21 | L | 2-0 |
| England Development League 2 | 2025/04/25 13:00 | Watford U21 v Cardiff U21 | L | 2-1 |