Wimbledon station is a National Rail, London Underground, and Tramlink station located in Wimbledon in the London Borough of Merton, and is the only London station that provides an interchange between rail, Underground, and Tramlink services. The station serves as a junction for services from London Underground's District line and National Rail operators (South West Trains and First Capital Connect), as well as Tramlink route 3. Some early morning services on the First Capital Connect route are provided by Southern. The station is in Travelcard Zone 3.

The station has 10 platforms. Platforms 1-4 are for London Underground, Platforms 5 and 8 are for inner suburban services, Platform 9 is for Thameslink and Platform 10 for the Croydon Tramlink. Platforms 6 and 7 are for express and outer suburban services, but very few express trains call at Wimbledon. In particular, no services to Bristol, Salisbury or Exeter call at Wimbledon.

The first railway station in Wimbledon was opened on 21 May 1838, when the London and South Western Railway (L&SWR) opened its line from its terminus at Nine Elms in Battersea to Woking. The original station was to the south of the current station on the opposite side of the Wimbledon Bridge.