| August 2023Aug 05 |  Championship | Middlesbrough 0–1 MillwallRegular Season - 1 | W |
| Aug 08 |  EFL Cup | Millwall0–4 Reading1st Round | L |
| Aug 12 | Championship | Millwall0–1 Bristol CityRegular Season - 2 | L |
| Aug 20 | Championship | Norwich 3–1MillwallRegular Season - 3 | L |
| Aug 26 | Championship | Millwall1–0 Stoke CityRegular Season - 4 | W |
| September 2023Sep 02 | Championship | Birmingham 1–1MillwallRegular Season - 5 | D |
| Sep 17 | Championship | Millwall0–3 LeedsRegular Season - 6 | L |
| Sep 20 | Championship | Millwall3–0 RotherhamRegular Season - 7 | W |
| Sep 23 | Championship | West Brom 0–0MillwallRegular Season - 8 | D |
| Sep 30 | Championship | Millwall0–3 SwanseaRegular Season - 9 | L |
| October 2023Oct 03 | Championship | Plymouth 0–2MillwallRegular Season - 10 | W |
| Oct 07 | Championship | Millwall2–2 Hull CityRegular Season - 11 | D |
| Oct 21 | Championship | Preston 1–1MillwallRegular Season - 12 | D |
| Oct 24 | Championship | Millwall1–2 BlackburnRegular Season - 13 | L |
| Oct 28 | Championship | Watford 2–2MillwallRegular Season - 14 | D |
| November 2023Nov 04 | Championship | Millwall0–1 SouthamptonRegular Season - 15 | L |
| Nov 11 | Championship | Sheffield Wednesday 0–4MillwallRegular Season - 16 | W |
| Nov 25 | Championship | Millwall0–3 CoventryRegular Season - 17 | L |
| Nov 29 | Championship | Ipswich 3–1MillwallRegular Season - 18 | L |
| December 2023Dec 02 | Championship | Millwall1–1 SunderlandRegular Season - 19 | D |
| Dec 09 | Championship | Cardiff 1–0MillwallRegular Season - 20 | L |
| Dec 13 | Championship | Leicester 3–2MillwallRegular Season - 21 | L |
| Dec 16 | Championship | Millwall1–1 HuddersfieldRegular Season - 22 | D |
| Dec 23 | Championship | Stoke City0–0MillwallRegular Season - 23 | D |
| Dec 26 | Championship | Millwall2–0 QPRRegular Season - 24 | W |
| Dec 29 | Championship | Millwall1–0NorwichRegular Season - 25 | W |
| January 2024Jan 01 | Championship | Bristol City0–1MillwallRegular Season - 26 | W |
| Jan 06 |  FA Cup | Millwall2–3Leicester3rd Round | L |
| Jan 13 | Championship | Millwall1–3MiddlesbroughRegular Season - 27 | L |
| Jan 20 | Championship | QPR2–0MillwallRegular Season - 28 | L |
| Jan 27 | Championship | Millwall1–1PrestonRegular Season - 29 | D |
| February 2024Feb 03 | Championship | Hull City1–0MillwallRegular Season - 30 | L |
| Feb 11 | Championship | Coventry2–1MillwallRegular Season - 31 | L |
| Feb 14 | Championship | Millwall0–4IpswichRegular Season - 32 | L |
| Feb 17 | Championship | Millwall0–2Sheffield WednesdayRegular Season - 33 | L |
| Feb 24 | Championship | Southampton1–2MillwallRegular Season - 34 | W |
| March 2024Mar 02 | Championship | Millwall1–0WatfordRegular Season - 35 | W |
| Mar 05 | Championship | Blackburn1–1MillwallRegular Season - 36 | D |
| Mar 09 | Championship | Millwall1–0BirminghamRegular Season - 37 | W |
| Mar 17 | Championship | Leeds2–0MillwallRegular Season - 38 | L |
| Mar 29 | Championship | Millwall1–1West BromRegular Season - 39 | D |
| April 2024Apr 01 | Championship | Rotherham2–1MillwallRegular Season - 40 | L |
| Apr 06 | Championship | Huddersfield1–0MillwallRegular Season - 41 | L |
| Apr 09 | Championship | Millwall1–0LeicesterRegular Season - 42 | W |
| Apr 13 | Championship | Millwall3–1CardiffRegular Season - 43 | W |
| Apr 20 | Championship | Sunderland0–1MillwallRegular Season - 44 | W |
| Apr 27 | Championship | Millwall1–0PlymouthRegular Season - 45 | W |
| May 2024May 04 | Championship | Swansea0–1MillwallRegular Season - 46 | W |
