The 1909 Army Cadets football team represented the United States Military Academy in the 1909 college football season. In their second season under head coach Harry Nelly, the Cadets compiled a 3–2 record, shut out two of their five opponents, and outscored all opponents by a combined total of 57 to 32. The team's two losses were to Yale and Harvard; the Army–Navy Game was not played in 1909. Tackle Daniel Pullen was selected by The New York Times as a second-team player on its All-America team.