La Tuque is a city located in north-central Quebec, Canada, on the Saint-Maurice River, between Trois-Rivières and Chambord. The population was 11,129 at the 2021 Canadian census, most of which live within the urban area. At over 28,000 km2 (11,000 sq mi), it is the largest city in Canada by area.

The Saint-Maurice River, or the Saint-Maurice River, is one of the main tributaries of the St. Lawrence River, after the Ottawa and the Saguenay Rivers and drains an area of 42,735 km2. It touches the Lake Saint John watershed to the north; the Nottaway River watershed, a major tributary of James Bay, to the northwest; and the southwestern tributaries of the Ottawa River. The Saint-Maurice River is located on the north shore of the St. Lawrence River in Quebec, Canada.