Chateaugay may refer to: Chateaugay (village), New York Chateaugay (town), New York Châteaugay, a commune of the Puy-de-Dôme Départment in France Châteauguay, a city southwest of Montreal Chateaugay (horse) (1960–1985), American Thoroughbred racehorse Chateauguay River, New York See also Chateauguay (disambiguation)