Gary Leon Ridgway, (* 18. února 1949 Salt Lake City, Utah) známý také jako Green River Killer, je americký sériový vrah. Ridgway zavraždil během osmdesátých let přes 49 žen ve státě Washington.
Gary Leon Ridgway (born February 18, 1949), known as the Green River Killer or the Green River Strangler, is an American serial killer who was convicted of murdering forty-nine women between 1982 and 1998 in the northwestern United States.