The rivière au Tonnerre is a watercourse that runs through the municipality of Rivière-au-Tonnerre, Quebec in the Minganie Regional County Municipality (RCM), in the Côte-Nord administrative region, in Quebec, in Canada. The course of the river crosses the township of Margane, then constitutes the boundary between the townships of Margane and Touzel until the confluence of the river with the North shore of the Gulf of Saint Lawrence.

Minganie is a regional county municipality bathes in the Gulf of St. Lawrence water's, in Côte-Nord region, Quebec, Canada, its territory includes Anticosti Island.