Belmont railway station serves the village of Belmont in the London Borough of Sutton in south London. The station is located on the Epsom Downs line and is in Travelcard Zone 5. It is 16 miles 1 chain (16.01 miles, 25.77 km) down the line from London Bridge measured via West Croydon. It is the closest station to the Royal Marsden Hospital, which is just under half a mile away. On 19 January 2023, Sutton Council were granted £14,121,979 from the government to add a turnback siding to the south of the station to increase capacity to let services run at 4 tph instead of the current 2 tph service pattern.

The station was opened by the London, Brighton and South Coast Railway on 22 May 1865, as part of the Epsom Downs branch line. The branch was originally laid as double track because of the race traffic, and was electrified on 17 June 1928. A modern CLASP (pre-fabricated concrete) building was erected in the 1970s (this has since been demolished and cleared away). The branch was singled in 1982 and all trains use the former down platform. The Up platform still exists however. The station itself has a ticket machine, cycle storage huts and a shelter for passengers to wait in during rain.

The station was originally named 'California', and was changed to 'Belmont' on 1 October 1875.

On 19 January 2023, Sutton Council were granted £14,121,979 from the government to add a turnback siding to the south of the station to increase capacity to let services run at 4tph instead of the current 2 tph service pattern. If all goes to plan, construction will start in April 2024 and finish in March 2026.

All services at Belmont are operated by Southern using Class 377 EMUs.

The typical off-peak service in trains per hour is:

• 2 tph to London Victoria via Norbury
• 2 tph to Epsom Downs

Prior to May 2018, the station was served by an hourly service on weekdays and Saturdays only, with no Sunday service. In May 2018, a half-hourly service was introduced on all days of the week.

Preceding station	National Rail			Following station
Sutton		Southern Epsom Downs Branch		Banstead

London Buses routes 80, 280, S1, S3, S4 and non-TfL routes 420 and 820 serve the station.

• Train times and station information for Belmont railway station (Sutton) from National Rail
• Map of Mole Valley lines
• The Epsom Downs branch website