Allyn McKeen (January 26, 1905 – September 13, 1978) was an American football player and coach. He served as the head coach at West Tennessee State Normal School, now the University of Memphis, from 1937 to 1938 and at Mississippi State College, now Mississippi State University, from 1939 to 1948, compiling a career college football record of 78–25–3. He was inducted into the College Football Hall of Fame as a coach in 1991.