Shawinigan is a city located on the Saint-Maurice River in the Mauricie area in Quebec, Canada. It had a population of 49,620 as of the 2021 Canadian census.

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.