
The du Lièvre River is a river in western Quebec which flows south from the Mitchinamécus reservoir and empties into the Ottawa River near Buckingham. The river is 330 km in length and lies parallel to and a few miles east of the Gatineau River. The Lièvre, named for the local abundance of snowshoe hares, is first mentioned in the journals of Pierre de Troyes, Chevalier de Troyes. In 1686, he led an expedition of 30 French soldiers and 70 local-born Canadiens from Montreal, up the Ottawa River and all the way to Hudson Bay.

The river flows through the communities of:
At one time, the river was used to transport logs downstream to sawmills located near the river's mouth. There are also a number of hydroelectric plants on the river.
Cottages and permanent homes are found along its more southern banks. The northern part is true wilderness and offers some fabulous white-water rafting and canoeing for the outdoor enthusiast.