The Den (previously The New Den) is a football stadium in New Cross Gate, south-east London, and the home of Millwall Football Club. The Den is adjacent to the South London railway originating at London Bridge, and a quarter-of-a-mile from the Old Den, which it replaced on September 30, 1993.
 View from the North Stand in 2009 | |
 Interactive map of The Den | |
| Former names | The New Den Senegal Fields The New London Stadium |
|---|---|
| Location | New Cross Gate London, SE16 |
| Coordinates | 51°29′9″N 0°3′3″W / 51.48583°N 0.05083°W |
| Capacity | 20,146 |
| Surface | SISGrass (hybrid grass) |
| Scoreboard | 55sqm LED Display |
| Field size | 106 × 64 m |
| Public transit |  South Bermondsey |
| Construction | |
| Built | 1992–93 |
| Opened | 4 August 1993 |
| Construction cost | £16 million |
| Tenants | |
| Millwall F.C. (1993–present) Millwall Lionesses L.F.C. (2015–2019) | |
Built on a previous site of housing, a church and the Senegal Fields playgrounds, the Den has an all-seated capacity of 20,146, although that is restricted to approximately 18,100 to allow for visiting fans' segregation and crowd safety measures.
The Den is the sixth stadium that Millwall have occupied since their formation in the Millwall area of the Isle of Dogs in 1885. Previous grounds include Glengall Road (1885–1886), Lord Nelson Ground (1886–1890), The Athletic Grounds (1890–1901), North Greenwich (1901–1910) and The Old Den (1910–1993).