Fort Belvoir

Fort Belvoir
Fairfax County, Virginia, U.S.
Emblems of units stationed at Ft. Belvoir
Fort Belvoir Show map of Northern Virginia Fort Belvoir Show map of Virginia Fort Belvoir Show map of the United States
Coordinates	38°43′11″N 77°09′16″W / 38.719737°N 77.154582°W / 38.719737; -77.154582
Site information
Controlled by	U.S. Army
Site history
Built	1917 (1917)
Garrison information
Current commander	COL Joseph V. Messina
Garrison	29th Infantry Division (Light) 9th Theater Support Command 1st Information Operations Command (Land) 12th Aviation Battalion (MDW) 249th Engineer Battalion (Prime Power) 212th Military Police Detachment (MDW) 55th Ordnance Company (EOD) 75th MP Detachment (CID) Army Intelligence and Security Command Military Intelligence Readiness Command 902nd Military Intelligence Group Defense Logistics Agency Defense Contract Audit Agency Defense Threat Reduction Agency Missile Defense Agency National Geospatial-Intelligence Agency Aerospace Data Facility-East
Occupants	51,000+ employees[1] (Fort Belvoir) 7,637 residents (Fort Belvoir CDP)

Fort Belvoir (/ˈbɛlvwɑːr/ BEL-vwar) is a United States Army installation and a census-designated place (CDP) in Fairfax County, Virginia, United States. It was developed on the site of the former Belvoir plantation, seat of the prominent Fairfax family for whom Fairfax County was named. It was known as Camp A. A. Humphreys from 1917 to 1935 and Fort Belvoir afterward.

Fort Belvoir is home to a number of significant United States military organizations. With nearly twice as many workers as The Pentagon, Fort Belvoir is the largest employer in Fairfax County. Fort Belvoir comprises three geographically distinct areas: main base, Davison Army Airfield, and Fort Belvoir North.