The 108th Air Defense Artillery Brigade is an air defense artillery brigade of the United States Army. The mission of the brigade is to train and maintain a strategic crisis response air defense artillery brigade capable of deploying worldwide, on short notice, to provide air defense force protection from air-breathing threats and tactical ballistic missiles, as well as allow freedom of maneuver for XVIII Airborne Corps operations.

The Air Defense Artillery Branch is the air defense branch of the United States Army, specializing in the use of anti-aircraft weapons to conduct anti-aircraft warfare operations. In the U.S. Army, these groups are composed of mainly air defense systems such as the Patriot Missile System, Terminal High Altitude Area Defense (THAAD), and the Avenger Air Defense system which fires the FIM-92 Stinger missile.