The Cabonga Reservoir (French: Réservoir Cabonga) is a man-made lake in central Quebec, Canada, with a total surface area of 677 square kilometres (261 sq mi) and a net area (water only) of 484 square kilometres (187 sq mi). It is located on the boundary between the unorganized territories of Lac-Pythonga and Réservoir-Dozois, and fully within the La Vérendrye Wildlife Reserve.