The 1921 Army Cadets football team Represented the United States Military Academy in the 1921 college football season. In their seventh season under head coach Charles Dudley Daly, the Cadets compiled a 6–4 record, shut out five of their ten opponents, and outscored all opponents by a combined total of 217 to 65. In the annual Army–Navy Game, the Cadets lost to the Midshipmen 7–0. The Cadets also lost to Yale and Notre Dame.