Gregg Williams (born July 15, 1958) is the defensive coordinator of the New Orleans Saints and the former head coach of the Buffalo Bills. Considered one of the most respected defensive minds in the game, Williams is known for running aggressive, attacking 4-3 schemes that put heavy pressure on opposing quarterbacks.
Williams was an assistant coach for the University of Houston under former Redskins head coach, Jack Pardee. He later went on to become the Special Teams coach of the Houston Oilers under then defensive coordinator, Buddy Ryan. From 1994-1996, Williams was the linebackers coach for the Oilers.
From 1997-2000, Williams was promoted to Defensive Coordinator of the now Tennessee Titans after the Oilers moved out of Houston. As the Defensive Coordinator, the Titans led the league in total defense and only gave up 191 points, the third fewest in the NFL since the league adopted the 16-game schedule in 1978. The defense also helped lead the Titans to Super Bowl XXXIV where they lost to the St. Louis Rams.