William Stiles Rademacher (May 13, 1942 – April 2, 2018) was an American professional football player who played as a wide receiver for seven seasons for the New York Jets and Boston Patriots. He earned MVP honors in 1963 In January 1969 he played in Super Bowl III. During Rademacher's tenure as assistant coach at Northern Michigan University, the football team went from a 0–10 season in 1974 to a 13–1 season in 1975 and won the NCAA Division II Football Championship.