Royal Air Force Upwood or more simply RAF Upwood is a former Royal Air Force station adjacent to the village of Upwood, Cambridgeshire, England, in the United Kingdom. It was a non-flying station which was under the control of the United States Air Force from 1981, and one of three RAF stations in Cambridgeshire used by the United States Air Forces in Europe (USAFE). Upwood, along with RAF Molesworth and RAF Alconbury are considered the "Tri-Base Area" due to their close geographic proximity, and interdependency.