| Professional Development League | Swansea City U21 | Millwall U21 | 27‑Jan | 1-1 | |
| Professional Development League | Brentford U21 | Millwall U21 | 20‑Jan | 1-2 | |
| Professional Development League | Millwall U21 | Swansea City U21 | 16‑Jan | 2-5 | |
| Professional Development League | Colchester United U21 | Millwall U21 | 09‑Jan | 0-6 | |
| Premier League Cup | Millwall U21 | Swansea City U21 | 20‑Dec | 1-5 | |
| Premier League Cup | Millwall U21 | Nottingham Forest U21 | 16‑Dec | 1-4 | |
| Premier League Cup | Nottingham Forest U21 | Millwall U21 | 12‑Dec | 2-1 | |
| Premier League Cup | Wolves U21 | Millwall U21 | 08‑Dec | 3-2 | |
| Professional Development League | Wigan Athletic U21 | Millwall U21 | 02‑Dec | 1-2 | |
| Premier League Cup | Swansea City U21 | Millwall U21 | 21‑Nov | 2-1 | |
| Professional Development League | Millwall U21 | Queens Park Rangers U21 | 14‑Nov | 2-1 | |
| Professional Development League | Millwall U21 | AFC Bournemouth U21 | 11‑Nov | 3-1 | |
| Professional Development League | Bristol City U21 | Millwall U21 | 04‑Nov | 1-4 | |
| Professional Development League | Millwall U21 | Charlton Athletic U21 | 28‑Oct | 2-4 | |
| Professional Development League | Watford U21 | Millwall U21 | 06‑Oct | 3-1 | |
| Professional Development League | Cardiff City U21 | Millwall U21 | 30‑Sep | 4-0 | |
| Premier League Cup | Millwall U21 | Wolves U21 | 26‑Sep | 1-1 | |
| Professional Development League | Millwall U21 | Colchester United U21 | 23‑Sep | 4-0 | |
| Professional Development League | Sheffield United U21 | Millwall U21 | 16‑Sep | 2-0 | |
| Professional Development League | Millwall U21 | Huddersfield Town U21 | 09‑Sep | 2-0 | |
| Professional Development League | Millwall U21 | Crewe Alexandra U21 | 26‑Aug | 2-3 | |
| Professional Development League | Hull City U21 | Millwall U21 | 19‑Aug | 1-0 | |
| Professional Development League | Millwall U21 | Barnsley U21 | 12‑Aug | 0-4 | |
| Friendlies Clubs | Welling United | Millwall U21 | 01‑Aug | 2-2 | |
