The St. Regis River (or rivière Saint-Régis in Quebec) is an 86 mi river in northern New York in the United States. It flows into the Saint Lawrence River at the hamlet of Saint Regis in the St. Regis Mohawk Reservation. The Saint Regis River basin includes Upper and Lower St. Regis Lakes, and Saint Regis Pond in the Saint Regis Canoe Area. It's a great fishery for trout.

Toponymy

The toponym "rivière Saint-Régis" was made official on December 5, 1968 at the Commission de toponymie du Québec.