The Lac Bureau is a vast freshwater body of the southwestern part of the Gouin Reservoir, in the territory of the town of La Tuque, in , in the administrative region of Mauricie, in the province of Quebec, in Canada. This lake extends in the cantons of Le May, Evanturel, Myrand, Achintre and Sulte. Following the erection completed in 1948 of the , the current shape of the "Lac Bureau" was shaped by the raising of the waters of the Gouin reservoir. The water level varies significantly, being dependent on the water management of the Gouin Dam erected in 1948.