Henry Martyn Cist (February 20, 1839 – December 16, 1902) was an American soldier, lawyer, and author who became a brevet brigadier general in the Union Army during the American Civil War. He is most noted for his classic and oft-referenced 1882 book The Army of the Cumberland. In addition, Cist led pioneering efforts to preserve and interpret the sites of the battles of Chickamauga and Chattanooga.