Head to Head
| England Championship | 2023/01/21 15:00 | Cardiff v Millwall | L | 0-1 |
| England Championship | 2022/09/03 14:00 | Millwall v Cardiff | L | 2-0 |
| England Championship | 2022/02/12 15:00 | Millwall v Cardiff | L | 2-1 |
| England Championship | 2021/08/21 14:00 | Cardiff v Millwall | W | 3-1 |
| England Championship | 2021/01/30 15:00 | Cardiff v Millwall | D | 1-1 |
| England Championship | 2020/11/21 15:00 | Millwall v Cardiff | D | 1-1 |
| England Championship | 2019/12/26 15:00 | Cardiff v Millwall | D | 1-1 |
| England Championship | 2019/10/22 18:45 | Millwall v Cardiff | D | 2-2 |
| England Championship | 2018/02/09 19:45 | Millwall v Cardiff | D | 1-1 |
| England Championship | 2017/10/28 14:00 | Cardiff v Millwall | D | 0-0 |
| England Championship | 2015/04/18 14:00 | Cardiff v Millwall | D | 0-0 |
| England Championship | 2014/10/25 11:15 | Millwall v Cardiff | L | 1-0 |