Rey Dempsey (born September 20, 1936) is a former college football coach at Youngstown State, Southern Illinois, and Memphis. From 1973 to 1974, he coached at Youngstown State, where he compiled a 12-8 record. In 1975, he was a special-teams coach for the Detroit Lions. From 1976 to 1983, he coached at Southern Illinois, where he compiled a 54-37 record. In 1983, his SIU team went 13-1, the best record in school history, winning a I-AA national championship. From 1984 to 1985, he coached at Memphis, where he compiled a 7-12-3 record. From 1991 to 2002, he served as Senior Pastor of Christ the King Church.