Championship, Regular Season - 41
Charlton vs Millwall
- Ground
- The Valley
- City
- London
- Capacity
- 27,111
- Half time
- 0–0
- Referee
- Dean Whitestone
Charlton lost to Millwall 0–1 in the Championship on 3 July 2020, at The Valley in London. The last time these two met at The Valley, Charlton 1–1 Millwall, on 13 September 2025.