Clapham Junction railway station () is a major railway station and
transport hub near St John's Hill in the south-west of
Battersea in the
London Borough of Wandsworth. Although it is in Battersea, the area around the station is commonly identified as Clapham Junction, which is situated north of the neighbouring district of
Clapham. Routes from London's south and south-west termini, and funnel through the station, making it one of the busiest in Europe by number of trains using it, between 100 and 180 per hour save for the five hours after midnight. The station is also the busiest UK station for interchanges between services.