Clapham High Street railway station is on the South London line in Clapham, within the London Borough of Lambeth, Greater London. It is 6 miles 21 chains (10.1 km) measured from London Bridge (the former LC&DR platforms also being 2 miles 25 chains (3.7 km) measured from London Victoria). It is served by London Overground services between Clapham Junction and Dalston Junction, with a limited service to Battersea Park. Southeastern services from Lewisham pass through the station, however proposals to call at the station have been limited by the age of Southeastern’s rolling stock.

It is close to Clapham North tube station, and interchange between the two is counted as an Out of Station Interchange on Oyster, so that users are charged for only one journey, rather than two separate journeys.

The station was opened on 25 August 1862 by the London, Chatham and Dover Railway (LCDR) as Clapham, renamed Clapham & North Stockwell from May 1863. The London, Brighton and South Coast Railway (LBSCR) route (current Atlantic Line, often referred to by its old name of South London Line) was authorized by an 1863 Act of Parliament and parallels the original 1862 LCDR route eastwards between Wandsworth Road and Brixton and beyond. Until the 1923 grouping all lines through the station were owned by the LCDR, with two leased to the LBSCR for their sole use.

The original 'south' 1862 line was leased to the LBSCR in 1867 and the LCDR used the new 'north' 1867 lines.

The existing platforms, together with the Grade II listed 1862 station building, form the original station. These platforms were used by the LCDR from 1862 to 1867, and the LBSCR until the 1923 grouping.

The 1867 LCDR platforms were closed on 3 April 1916 and subsequently demolished. The eastbound platform's station building was destroyed by a bomb in 1944.

The LCDR 1866 station building (on the north side) was partially demolished in 1924 after the 1916 closure, finally being demolished in the late 1970s. In British Rail days, access to the platforms was via a subway on the north side.

The original south 1862 building was sold, being initially used as a furniture warehouse before being redeveloped in 2003 as residential accommodation. It is now Grade II listed. The platform had a full-length canopy that was demolished in the late 1970s.

The line between London Victoria and London Bridge was electrified at 6600 V AC on the overhead system on 1 December 1909. It was re-electrified in 1928 using third rail 660 V DC and the overhead was dismantled.

In 1937 it was renamed Clapham before receiving its current name in 1989 to avoid confusion with Clapham Junction.

In 1989 it was given a 'worst station' award by The Daily Telegraph. Judges wrote in their report that the corridors and stairs were "filthy with broken lights, filthy paintwork which is covered in graffiti and litter including aerosols, broken glass, bricks and rags everywhere which you have to step over".

In 2012 Southern refurbished the eastbound platform, erecting a new fence and repaving the surface. In late 2012, London Overground erected new waiting shelters and station name signs.

v t e London Overground
Cheshunt Theobalds Grove Enfield Town Turkey Street Romford Bush Hill Park Southbury Emerson Park Upminster Edmonton Green Silver Street Chingford White Hart Lane Highams Park Watford Junction Bruce Grove Wood Street Watford Seven Sisters Walthamstow Central High Street Harringay Blackhorse Road Walthamstow Queen's Road Bushey Green Lanes Carpenders Park Crouch Hill South Tottenham St. James Leyton Midland Road Hatch End Upper () Stamford Hill Street Leytonstone Headstone Lane Holloway Stoke Newington Clapton High Road Harrow & Kentish Town West Rectory Road Wanstead Park () Wealdstone Gospel Oak Camden Road () Hackney Woodgrange Park () Kenton () Caledonian Road Canonbury Downs Barking South Kenton & Barnsbury Barking Riverside () North Highbury & Islington Dalston Kingsland Hackney Central Wembley Hampstead Heath Dalston Wembley Finchley Road & Frognal () Junction London Fields Central West Hampstead ( ) Haggerston Cambridge Homerton Stonebridge Brondesbury Hoxton Heath Hackney Wick Park Brondesbury Park Shoreditch High Street Bethnal Green Stratford Harlesden Kensal Rise Kensal Green Liverpool Whitechapel Willesden Queen's Park Street Shadwell () Junction Kilburn High Road Wapping South Hampstead Rotherhithe Shepherd's Bush () Euston () Canada Water Kensington (Olympia) Surrey Quays West Brompton Battersea Park Imperial Wharf () (limited service) New Cross Clapham Queens Road Peckham New Cross Gate Junction Peckham Rye Brockley Acton Central Wandsworth Road Denmark Hill Honor Oak Park South Acton () Clapham Forest Hill Gunnersbury High Street Sydenham Kew Gardens Richmond Crystal Palace Penge West Anerley Norwood Junction West Croydon ()
Legend
Station National Rail Liberty line Accessible station Thameslink Lioness line Interchange station Elizabeth line Mildmay line Accessible interchange Docklands Light Railway Suffragette line Internal interchange London Underground Weaver line Out-of-station interchange London Trams Windrush line (   ) Nearby interchange London River Services The new London Overground line names and colours are to be introduced across the London rail network in autumn 2024

The typical off-peak and peak service is four London Overground trains per hour to Clapham Junction and four trains per hour to Dalston Junction via Shoreditch High Street, joining the East London line at Surrey Quays.

Preceding station	London Overground			Following station
Denmark Hill towards Dalston Junction		South London line		Wandsworth Road towards Clapham Junction
Historical railways
Wandsworth Road Line and station open		British Rail Southern Region South London line		East Brixton Line open, station closed
Wandsworth Road Line and station open		London, Chatham & Dover Railway Main Line		Brixton Line and station open

Until 8 December 2012, Clapham High Street was served by a twice-hourly Southern service between London Victoria and London Bridge.

From 9 December 2012, London Overground services began operating between Clapham Junction and Surrey Quays, completing the orbital route around London. As a result, all Southern services were withdrawn and replaced with London Overground services, with four trains calling per hour.

London Buses routes 50, 88, 155, 322, 345 and P5 and night route N155 serve the station.

• Train times and station information for Clapham High Street railway station from National Rail
• Department for Transport letter regarding the withdrawal of Victoria services