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), American Thoroughbred racehorse
Chateaugay may refer to: