Miles Webster "Mike" Casteel (December 30, 1895 – March 27, 1977) was an American football player and coach. He played college football as the quarterback at Kalamazoo College and also played one season in the National Football League (NFL) for the Rock Island Independents. He later served as the head football coach at the University of Arizona in from 1939 to 1948, compiling a record of 46–26–3.