Ash is a village and civil parish in the far west of the borough of Guildford, Surrey. Ash is on the eastern side of the River Blackwater, with a station on the Reading-Guildford-Gatwick line, and direct roads to Aldershot, Farnham and Guildford. The 2011 census counted the residents of the main ward of Ash, which excludes Ash Vale, as 6,120. It is within the Blackwater Valley and adjoins the riverside in the east of that large town; Ash has a small museum in the local cemetery chapel, a large secondary school and a library.

The Borough of Guildford is a local government district with borough status in Surrey, England. With around half of the borough's population, Guildford is its largest settlement and only town, and is where the council is based.