Robert Eugene "Bud" Foster Jr. (born July 28, 1959) is a retired American college football coach and former player. He currently serves as a Special Assistant to Athletics Director Whit Babcock. Following the 2006 season, he received the Frank Broyles Award, which is annually given to the top assistant coach in college football. Foster's 2005 and 2006 Hokie defenses led the nation in total defense. Foster is regarded as one of the best defensive coordinators in college football. On August 1, 2019, Foster announced he was retiring at the end of the 2019 season.