Saint-Donat is a township municipality in the Canadian province of Quebec, part of the Regional County Municipality of Matawinie, within the larger administrative region of Lanaudière. The main town within the township is also identified as Saint-Donat-de-Montcalm to distinguish it from a parish municipality with the same name in La Mitis RCM. It is located approximately 135 kilometres (84 mi) northwest of Montreal. The town is surrounded by mountains and numerous water basins of the Laurentian Mountains.