Matawinie (French pronunciation: [matawini]) is a regional county municipality in the region of Lanaudière in southwestern Quebec, Canada.

The population according to the 2021 Canadian Census was 55,500.

[3] There are 27 subdivisions within the RCM:[2]

French and Atikamekw are the main languages.

Highways and numbered routes that run through the municipality, including external routes that start or finish at the county border:[9]