William Keith Bostic (born January 17, 1961) is a former professional American football player who played for seven seasons in the National Football League (NFL). During his career he played safety for the Houston Oilers and the Cleveland Browns. Bostic served as the Oiler defensive captain under Jerry Glanville. He earned one Pro Bowl selection and missed another based on a tiebreaker for the last safety chosen. In his Pro Bowl season, he led the American Football Conference in interceptions.