Head to Head
| England U23 Development League | 2019/02/18 13:31 | Millwall U23 v Cardiff U23 | W | 0-1 |
| England U23 Development League | 2018/09/24 11:57 | Cardiff U23 v Millwall U23 | D | 2-2 |
| England U23 Development League | 2018/01/08 11:58 | Cardiff U23 v Millwall U23 | D | 1-1 |
| England U23 Development League | 2017/10/16 13:25 | Millwall U23 v Cardiff U23 | D | 1-1 |
| England U23 Development League | 2017/01/30 14:00 | Cardiff U23 v Millwall U23 | D | 1-1 |
Home History
| England U23 Development League | 2019/09/16 12:00 | Sheff Wed U23 v Cardiff U23 | W | 2-3 |
| England U23 Development League | 2019/09/09 12:00 | Cardiff U23 v Bolton U23 | W | 1-0 |
| England U23 Development League | 2019/08/30 18:00 | Nottm Forest U23 v Cardiff U23 | L | 4-1 |
| England U23 Development League | 2019/08/20 11:00 | Barnsley U23 v Cardiff U23 | L | 3-1 |
| England U23 Development League | 2019/08/12 12:00 | Cardiff U23 v Sheff Utd U23 | L | 1-3 |
| England U23 Development League | 2019/04/15 17:59 | Cardiff U23 v Bolton U23 | W | 3-2 |
| England U23 Development League | 2019/04/06 10:51 | Birmingham U23 v Cardiff U23 | L | 3-1 |
| England U23 Development League | 2019/03/29 15:01 | Watford U23 v Cardiff U23 | D | 0-0 |
Away History
| England U23 Development League | 2019/09/23 12:00 | Colchester U23 v Millwall U23 | L | 3-1 |
| England U23 Development League | 2019/09/06 12:00 | Millwall U23 v Sheff Utd U23 | W | 1-0 |
| England U23 Development League | 2019/08/26 13:00 | Millwall U23 v Nottm Forest U23 | W | 2-0 |
| England U23 Development League | 2019/08/19 12:00 | Leeds U23 v Millwall U23 | L | 3-2 |
| England U23 Development League | 2019/08/09 12:00 | Millwall U23 v Burnley U23 | D | 1-1 |
| UK Friendlies | 2019/07/16 18:33 | Eastbourne Borough v Millwall U23 | W | 0-2 |
| England U23 Development League | 2019/04/15 13:00 | Millwall U23 v Sheff Utd U23 | D | 0-0 |
| England U23 Development League | 2019/04/08 17:52 | Nottm Forest U23 v Millwall U23 | L | 2-1 |