Bill Davis is a former American football linebacker and coach, known for his contributions to the sport at various levels. He played college football at University of Pittsburgh and later went on to play professionally in the National Football League (NFL). His playing career included stints with teams like the San Francisco 49ers and the New York Giants. After retiring as a player, Davis transitioned into coaching, where he held positions with several NFL teams, including the Pittsburgh Steelers and the Arizona Cardinals. His coaching career spanned multiple decades, focusing on developing defensive strategies and mentoring players in the linebacker position.