Chalgrove Airfield (ICAO: EGLJ) is a former Second World War airfield in Oxfordshire, England. The airfield is located approximately 3 mi (4.8 km) north-northeast of Benson; about 42 mi (68 km) north-northwest of London.
Opened in 1943, it was used by both the Royal Air Force and United States Army Air Forces. During the war it was used primarily as a combat reconnaissance airfield. After the war it was closed in late 1946.
Today, the airfield is primarily used by the Martin-Baker company for testing ejector seats.
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