The 4700th Air Defense Group is a discontinued United States Air Force (USAF) organization. Its last assignment was with the 4709th Air Defense Wing at Stewart Air Force Base, New York. It was activated in 1950 as a support unit for USAF units at Stewart. In 1954, it assumed an operational mission and was assigned two interceptor squadrons. The group was discontinued on 18 August 1955 and its personnel and equipment were transferred to the 329th Fighter Group (Air Defense) as part of Project Arrow, an Air Defense Command project to air defense groups with fighter units with distinguished histories from World War I or World War II.