Ralph Stewart (born December 10, 1925) was an American football player and coach. He was a star player (center and linebacker) at the University of Missouri, and played at center for the 1940s New York Yankees and Baltimore Colts football teams. After working as a line coach at Drake University, he was named athletic director and head coach of the University of South Dakota football program in 1956. Stewart later returned to the University of Missouri as director of intramural athletics. He earned three degrees from the University of Missouri (B.S., M.Ed., Ed.D) and served 20 years as chairman of its Physical Education Department before his retirement in 1991.