La Sarre is a town in northwestern Quebec, Canada, and is the most populous town and seat of the Abitibi-Ouest Regional County Municipality. It is located at the intersection of Routes 111 and 393, on the La Sarre River, a tributary of Lake Abitibi. In addition to La Sarre itself, the town's territory also includes the community of Bienvenu, located along Route 111 west of the La Sarre River.
