Thameslink (disambiguation)
Thameslink is a major British railway route running in South East England

Related to the above railway route, Thameslink may also refer to:
 City Thameslink, station on the route, opened in 1990
 Govia Thameslink Railway, train operating company that has operated services under the Thameslink brand since 2014
 Kings Cross Thameslink, former station on the route, open between 1983 and 2007
 Thameslink Programme, a major railway project to upgrade the route
 Thameslink, Southern and Great Northern, the name of the franchise
 Thameslink (train operating company 1997–2006), a former train operating company