Mandeville is a municipality in the Lanaudière region of Quebec, Canada, part of the D'Autray Regional County Municipality. Prior to June 2, 2001, it was officially known as Saint-Charles-de-Mandeville.The town itself is located along the Mastigouche River, just north of Lake Maskinongé. The municipal territory is dotted with lakes, many of which are lined with cottages. The northern portion is undeveloped and part of the Mastigouche Wildlife Reserve.