The Three Bridges–Tunbridge Wells line is a mostly disused railway line running from Three Bridges in West Sussex to Tunbridge Wells Central in Kent via East Grinstead in West Sussex, a distance of 20 miles 74 chains (33.7 km). Opened in 1855, the main section of the line was a casualty of the Beeching Axe – the last train ran on 1 January 1967. The remaining section to Tunbridge Wells closed on 6 July 1985, although the section between Groombridge and Tunbridge Wells West was reopened in 1997 under the auspices of the Spa Valley Railway.

Three Bridges railway station is located in and named after the village of Three Bridges, which is now a district of Crawley, West Sussex, England. It is at the point where the Arun Valley Line diverges from the Brighton Main Line and Thameslink, 29 miles 21 chains (47.1 km) down the line from London Bridge via Redhill.