Royal Air Force Ash or more simply RAF Ash (formerly RAF Sandwich) was a Royal Air Force underground control centre and radar station situated near the village of Woodnesborough, Kent, England.

However, after the Second World War the area was chosen for one of a chain of ROTOR air defence radar stations and the site was relocated to an underground bunker 1.5 miles to the southwest in Marshborough Road, Ash.

[1] In 1980 the site was re-acquired by the RAF for the development of Improved UK Air Defence Ground Environment (IUKADGE) and became operational as RAF Ash on 6 January 1986.

[1] The Ministry of Defence sold the site on 24 July 1998.

[2] The site is now used as a secure data centre by The Bunker, an Internet hosting company.