William Ferdie Brown (December 2, 1940 – October 22, 2019) was an American football executive, player, and coach. He played as a cornerback for the Denver Broncos and the Oakland Raiders in the National Football League (NFL). Following his playing career, Brown remained with the Raiders as an assistant coach. He served as the head football coach at California State University, Long Beach in 1991, the final season before the school's football program was terminated. Brown was inducted into the Pro Football Hall of Fame as a player in 1984. At the time of his death he was on the Raiders' administrative staff.