The Bouzanquet Bay is a vast freshwater body of the south-eastern part of the Gouin Reservoir, in the territory of the town of La Tuque, in Haute-Mauricie, in the administrative region of Mauricie, in the province of Quebec, in Canada.

The route 400, connecting the Gouin Dam to the village of Parent, Quebec, serves the southern part of Bouzanquet Bay, as well as the river valleys Jean-Pierre and Leblanc; this road also serves the peninsula which stretches north in the Gouin reservoir on 30.1 kilometres (18.7 mi).

On the north side, the "Bouzanquet Pass" (length: 0.7 kilometres (0.43 mi)) separates this bay with the Southwest arm of Brochu Lake.

Bouzanquet published in the Bulletin of the latter (volume 22, numbers 1 and 2, 1928), a text dedicated to the history of New France and to Monsieur de Montcalm in particular.

The toponym "Baie Bouzanquet" was formalized on December 5, 1968, by the Commission de toponymie du Quebec, i.e. at its creation.