James M. "Big Jim" Tatum (July 22, 1913 – July 23, 1959) was an American football and baseball player and coach. Tatum served as the head football coach at the University of North Carolina at Chapel Hill (1942, 1956–1958), the University of Oklahoma (1946), and the University of Maryland, College Park (1947–1955), compiling a career college football record of 100–35–7. His 1953 Maryland team won a national title. As a head coach, he employed the split-T formation with great success, a system he had learned as an assistant under Don Faurot at the Iowa Pre-Flight School during World War II. Tatum was also the head baseball coach at Cornell University from 1937 to 1939, tallying a mark of 20–40–1. Tatum's career was cut short by his untimely death in 1959. He was inducted into the College Foo