Chateaugay
Chateaugay or Châteauguay may refer to:
- Chateaugay (village), New York
 - Chateaugay (town), New York
 - Châteaugay, a commune of the Puy-de-Dôme Department in France
 - Châteauguay, a city southwest of Montreal
 - Chateaugay (horse) (1960–1985), American Thoroughbred racehorse
 - Châteauguay River, New York and Quebec