Head to Head
| 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 | 2019/02/04 13:22 | Millwall U23 v Coventry U23 | W | 3-0 |
| England U23 Development League | 2019/01/28 12:59 | Ipswich U23 v Millwall U23 | L | 5-0 |
| England U23 Development League | 2019/01/22 13:02 | Millwall U23 v Crystal Palace U23 | L | 1-2 |
| England U23 Development League | 2019/01/07 18:59 | Colchester U23 v Millwall U23 | W | 0-2 |
| England U23 Development League | 2018/12/18 13:03 | Millwall U23 v QPR U23 | L | 0-2 |
| England U23 Development League | 2018/12/07 14:57 | Watford U23 v Millwall U23 | L | 1-0 |
| England U23 Development League | 2018/11/26 13:33 | Millwall U23 v Ipswich U23 | W | 2-0 |
| England U23 Development League | 2018/11/19 12:56 | Coventry U23 v Millwall U23 | D | 1-1 |
Away History
| England U23 Development League | 2019/02/11 19:02 | Cardiff U23 v Coventry U23 | L | 2-3 |
| England U23 Development League | 2019/01/28 19:03 | Bristol City U23 v Cardiff U23 | L | 3-0 |
| England U23 Development League | 2019/01/21 13:01 | Colchester U23 v Cardiff U23 | L | 2-1 |
| England U23 Development League | 2019/01/14 12:01 | Cardiff U23 v Ipswich U23 | L | 0-1 |
| England U23 Development League | 2019/01/07 13:00 | Crystal Palace U23 v Cardiff U23 | D | 1-1 |
| England U23 Development League | 2018/12/10 13:01 | Charlton U23 v Cardiff U23 | L | 1-0 |
| England U23 Development League | 2018/11/23 14:01 | Cardiff U23 v Bristol City U23 | D | 1-1 |
| England U23 Development League | 2018/11/19 19:00 | Cardiff U23 v Watford U23 | W | 2-0 |