The 4676th Air Defense Group is a discontinued United States Air Force (USAF) organization. Its last assignment was with the 33d Air Division of Air Defense Command (ADC) at Grandview AFB Missouri, where it was discontinued in 1955. The group was activated at Fairfax Field in 1953 as USAF host for both Fairfax and Grandview. It moved to Grandview when that base was completed and added an operational air defense mission in 1954. It was discontinued in 1955 when ADC replaced air defense groups commanding fighter squadrons with fighter groups that had distinguished records in the two World Wars.