|Royal Air Force Alconbury or RAF Alconbury is an active Royal Air Force station in the United Kingdom, located in Huntingdon, England. The airfield is adjacent to the Stukeleys Great and Little, Alconbury.|
Opened in 1938, it is currently a non-flying facility under the control of the United States Air Force. It is one of three RAF stations in Cambridgeshire currently used by the United States Air Forces in Europe (USAFE). Alconbury, along with RAF Molesworth and RAF Upwood are considered the "Tri-Base Area" due to their close geographic proximity, and interdependency. Except for a period of inactivity between 1945 and 1951, the station has been continuously in use.
RAF Alconbury and RAF Molesworth are the last Second World War-era Eighth Air Force bases in Britain that are still actively in use and controlled by the United States Air Force.