Mike Nolan (born March 7, 1959 in Baltimore, Maryland) is an American football coach. He is the current defensive coordinator of the Dallas Cowboys of the National Football League. He was formerly head coach for the San Francisco 49ers and a defensive coordinator for the Baltimore Ravens (was also Baltimore's wide receivers coach in 2001), New York Jets, Washington Redskins, New York Giants, Denver Broncos and Miami Dolphins. He is famous for also wearing a suit often while coaching (NFL coaches usually wear team clothing), which was originally a memorial for his late father.