| 1. Round | 12/09/2020 | Millwall FC | - | Stoke City | 0:0 | ||||
| 3. Round | 26/09/2020 | Millwall FC | - | Brentford FC | 1:1 | ||||
| 4. Round | 03/10/2020 | Swansea City | - | Millwall FC | 2:1 | ||||
| 5. Round | 17/10/2020 | Wycombe Wanderers | - | Millwall FC | 1:2 | ||||
| 6. Round | 20/10/2020 | Millwall FC | - | Luton Town | 2:0 |  |
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| 7. Round | 24/10/2020 | Millwall FC | - | Barnsley FC | 1:1 | ||||
| 9. Round | 31/10/2020 | Millwall FC | - | Huddersfield Town | 0:3 | ||||
| 11. Round | 07/11/2020 | Sheffield Wednesday | - | Millwall FC | 0:0 | ||||
| 39. Round | 02/04/2021 | Millwall FC | - | Rotherham United | 1:0 | ||||
| 41. Round | 10/04/2021 | Millwall FC | - | Swansea City | 0:3 | ||||
| 43. Round | 21/04/2021 | Millwall FC | - | AFC Bournemouth | 1:4 | ||||
| 44. Round | 24/04/2021 | Watford FC | - | Millwall FC | 1:0 | ||||
| 45. Round | 01/05/2021 | Millwall FC | - | Bristol City | 4:1 | ||||
| 46. Round | 08/05/2021 | Coventry City | - | Millwall FC | 6:1 |
England
Ireland