Greg Blache (born March 9, 1949) is an American retired professional football coach, most recently the defensive coordinator of the Washington Redskins. He served as Defensive Coordinator-Defensive Line 2004 through 2007 for the Redskins, followed by two seasons as the Defensive Coordinator under former coach Jim Zorn. He served as the Chicago Bears' defensive coordinator for five years prior to joining the Redskins.