Hamilton Pierce "Mac" McWhorter (born June 17, 1950) is the offensive line coach for the Penn State Nittany Lions and was the interim head coach for Georgia Tech's football team in 2001 after George O'Leary resigned and only coached for one game, the 2001 Seattle Bowl against No. 11-ranked Stanford. Tech won, 24 to 14, technically giving McWhorter the highest win percentage of any Georgia Tech football coach.