Tramlink (initially known as Croydon Tramlink) is a tramway system serving the south London area of England, United Kingdom. The service is currently operated by FirstGroup on behalf of Transport for London (TfL) but it has been agreed that TfL will purchase the system and take control of it later in 2008. Tramlink meets National Rail lines at a number of stations, but because it runs in an area relatively under-served by the London Underground (one of the reasons for its creation), its only interchange with the Underground is at Wimbledon. The system, centred on Croydon, began operation in May 2000.
Tramlink consists of a mixture of street track shared with other vehicles, dedicated track within the street, and off-street track. The off-street track includes new rights-of-way, former railway lines, and one section that shares the right-of-way (though not track) with a third-rail electrified Network Rail line.