Wimbledon Common is a large open space in Wimbledon south-west London, totalling 460 hectares (1140 acres). There are three named areas: Wimbledon Common, Putney Heath, and Putney Lower Common which together are managed under the name Wimbledon and Putney Commons. Putney Lower Common is separated from the rest of the Common by about 1.5 miles (2.4 km) of built-up area of southwest Putney.

Wimbledon Common together with Putney Heath and Putney Lower Common is legally protected by the Wimbledon and Putney Commons Act of 1871 from being enclosed or built upon. The common is for the benefit of the general public for informal recreation and the preservation of natural flora and fauna. It is the largest expanse of heathland in the London area. There is an area of bog with unique flora. The western slopes, which lie on London Clay, support mature mixed woodland. The Commons are also a flagship site for the stag beetle.

Most of the Common is a Site of Special Scientific Interest and a Special Area of Conservation under the EC Habitats Directive.English Nature work with the Conservators on the management plan for the area.