| Millwall FC v Southend United FC 08/10/1921 | View match | |
| Southend United FC v Millwall FC 15/10/1921 | View match | |
| Swansea Town v Millwall FC 22/10/1921 | View match | |
| Millwall FC v Swansea Town 29/10/1921 | View match | |
| Millwall FC v Exeter City FC 05/11/1921 | View match | |
| Exeter City FC v Millwall FC 12/11/1921 | View match | |
| Millwall FC v Swindon Town FC 19/11/1921 | View match | |
| Swindon Town FC v Millwall FC 26/11/1921 | View match | |
| Millwall FC v Southampton FC 03/12/1921 | View match | |
| Millwall FC v Gillingham FC 10/12/1921 | View match | |
| Luton Town FC v Millwall FC 17/12/1921 | View match | |
| Millwall FC v Luton Town FC 24/12/1921 | View match |