The Saint-André river (in French: rivière Saint-André) is a tributary of the Filkars River whose current flows successively into the Beaurivage River, the west bank of the Chaudière River and the south shore of the St. Lawrence River. It flows in the municipalities of Saint-Sylvestre and Sainte-Agathe-de-Lotbinière, in the Lotbinière Regional County Municipality, in the administrative region of Chaudière-Appalaches, in Québec, in Canada.