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.

This name probably came from an American man originally from Boston who joined the Abenaki at the beginning of the 19th century.

In 1823, a reference was made to an Abenaki man named Jean-Baptiste Bostonnais who had one of his daughters baptized at Trois-Rivières.

The Bostonnais family had their hunting territory in the area where the namesake rivers flow.