Royal Air Force Greenham Common or more simply RAF Greenham Common is a former Royal Air Force station in the civil parishes of Greenham and Thatcham in the English county of Berkshire. The airfield was southeast of Newbury, about 55 miles (89 km) west of London.

Opened in 1942, it was used by the United States Air Force during the Second World War and during the Cold War, and later as a base for nuclear weapons. After the Cold War ended, it was closed in September 1992. The airfield was also known for the Greenham Common Women's Peace Camp held outside its gates in the 1980s in protest against the stationing of cruise missiles on the base. In 1997 Greenham Common was designated as public parkland.