Carshalton was a constituency combining with areas to the south-west, then to the east instead, Carshalton which is a suburb on a long, north–south hillside south of London. The latter form saw it take up an eastern "half" (i.e. one of two divisions) of the London Borough of Sutton. It returned one Member of Parliament (MP) to the House of Commons of the Parliament of the United Kingdom.

It was created for the 1945 general election having been the south-west of "Mitcham" and on shedding Banstead in 1974 it gained what had been the south-east of the Mitcham seat, then was abolished for the 1983 general election, when it was replaced by Carshalton and Wallington, a nearly identical eastern set of 13 wards of its (post-1965) solely related local government area (London Borough).

1945–1974: The Urban Districts of Banstead and Carshalton.

Note: abolished as entities from April 1965, falling into Surrey County Council and the London Borough of Sutton respectively

1974–1983: The London Borough of Sutton wards of Beddington North, Beddington South, Carshalton Central, Carshalton North East, Carshalton North West, Carshalton St Helier North, Carshalton St Helier South, Carshalton St Helier West, Carshalton South East, Carshalton South West, Wallington Central, Wallington North, and Wallington South.

1983: constituency abolished: see Carshalton and Wallington

As to 1945-1965 period: list of parliamentary constituencies in Surrey