Blue Grass Army Depot (BGAD) is a U.S. Army storage facility for conventional munitions and chemical weapons. The facility is located in east central Kentucky, southeast of the cities of Lexington and Richmond, Kentucky. The 14,494-acre (58.66 km2) site, composed mainly of open fields and wooded areas, is used for munitions storage, repair of general supplies, and the disposal of munitions. The installation is used for the storage of conventional explosive munitions as well as assembled chemical weapons. The depot primarily is involved in industrial and related activities associated with the storage and maintenance of conventional and chemical munitions.

The tenant organization, Blue Grass Chemical Activity, is responsible for the chemical weapons stored at BGAD. BGCA is part of the Army's Chemical Materiels Activity, headquartered in Edgewood, Maryland. The demilitarization of the chemical weapons is the responsibility of a third organization, Assembled Chemical Weapons Alternatives (ACWA).

BGAD provides munitions, chemical defense equipment, and ammunition support to the joint warfighter. It is the Department of Defense's primary center for surveillance, receipt, storage, issue, testing and minor repair for the Chemical Defense Equipment Program. BGAD maintains and supports CDE stocks for deploying units and homeland defense forces, and is a training site for reserve component and other deploying units.