The 1903 Army Cadets football team represented the United States Military Academy in the 1903 college football season. In their first and only season under head coach Edward Leonard King, the Cadets compiled a 6–2–1 record, shut out five of their nine opponents, and outscored all opponents by a combined total of 164 to 33.

Major General Edward Leonard King was an American football player and coach and officer in the United States Army. He played college football as the halfback at the United States Military Academy from 1894 to 1895 and served as the head coach of the Army football team in 1903. King was a career military officer who served in the Spanish–American War and World War I. He was the Commandant of the United States Army Command and General Staff College from 1925 to 1929 and attained the rank of major general.