Clapham Junction railway station is a major railway station and transport hub near St John's Hill in southwest Battersea in the London Borough of Wandsworth. It is 2 miles 57 chains from London Victoria and 3 miles 74 chains from London Waterloo; it is on both the South West Main Line and Brighton Main Line as well as numerous other routes and branch lines passing through or diverging from the main lines at this station. Despite its name, Clapham Junction is not located in Clapham, a district situated approximately 1 mile (1.6 km) to the southeast and is instead sited in Battersea.

Battersea is a large district in southwest London, part of the London Borough of Wandsworth, England. It is centred 3.5 miles (5.6 km) southwest of Charing Cross it also extends along the south bank of the Thames Tideway. It includes the 200-acre (0.81 km2) Battersea Park.