Ashford is a town in Spelthorne, in Surrey, England, 14 mi (23 km) west of central London. Its name derives from a crossing point of the River Ash, a distributary of the River Colne. Historically part of Middlesex, the town has been part of Surrey since 1965. Ashford consists of relatively low density low- and medium-rise buildings, none of them being high rise. If excluding apartments most houses are semi-detached. In 2011 it had a population of 27,382.

Spelthorne is a local government district with borough status in Surrey, England. Its council is based in Staines-upon-Thames; other settlements in the area include Ashford, Sunbury-on-Thames, Shepperton, Stanwell and Laleham. It is named after the medieval Spelthorne Hundred which had covered the area.