Marcus Cornelius Washington (born October 17, 1977 in Auburn, Alabama) is an American football linebacker who is currently a free agent. He was drafted by the Indianapolis Colts in the second round of the 2000 NFL Draft. He played college football at Auburn.
Washington has also played for the Washington Redskins.
Washington attended Auburn High School in Auburn, Alabama, where he lettered in both basketball and football. Auburn High School was also attended by Dallas Cowboys outside linebacker Demarcus Ware and New York Giants defensive end Osi Umenyiora.