La Bostonnais is a municipality in the Mauricie region of the province of Quebec in Canada. The community is about 10 kilometres (6.2 mi) north of La Tuque's town centre along Quebec Route 155.The municipality takes its name from the nearby Bostonnais and Little Bostonnais Rivers. This name probably came from an American man originally from Boston who joined the Abenaki at the beginning of the 19th century.