Otterburn Park is a small town located 40 kilometres (25 mi) east of Montreal, Quebec, Canada. The population as of the Canada 2011 Census was 8,450. The town lies south of Mont-Saint-Hilaire on the Richelieu River and is one of the few officially bilingual towns in Quebec.

The Richelieu River is a river of Quebec, Canada, and a major right-bank tributary of the St. Lawrence River. It rises at Lake Champlain, from which it flows northward through Quebec and empties into the St. Lawrence. It was formerly known by the French as the Iroquois River and the Chambly River, and was named for Cardinal Richelieu, the powerful minister under Louis XIII.