The 10th Antiaircraft Artillery Battalion (10th AAA Bn) was a United States Marine Corps antiaircraft unit that served during World War II. Formed in 1942 as the 10th Defense Battalion, its original mission was to provide air and coastal defense for advanced naval bases. During the war the battalion defended took part in combat operations in the Russell Islands and at the Eniwetok. The battalions tank platoon also saw extensive action on New Georgia and Arundel Island. The battalion was decommissioned before the end of the war on 25 November 1944.