Challace Joe McMillin (March 18, 1942 – March 8, 2020) was an American football, track and field, and cross country coach. He was the first head coach of James Madison University's football program, serving from 1972 to 1984 and compiling a record of 67–60–2. A native of Gilt Edge, Tennessee, McMillin was a high school coach in Memphis, Tennessee before coming to James Madison in 1971, when he launched the school's track and field program and also coached cross country. McMillin was also a member of the faculty in James Madison's kinesiology department.