La Matapédia is a regional county municipality (RCM) in eastern Quebec, Canada at the base of the Gaspé peninsula, in the Bas-Saint-Laurent region. Its seat is in Amqui. It is named after the Matapédia River which runs through the western part of the RCM.

The Bas-Saint-Laurent, is an administrative region of Quebec located along the south shore of the lower Saint Lawrence River in Quebec. The river widens at this place, later becoming a bay that discharges into the Atlantic Ocean and is often nicknamed "Bas-du-Fleuve" (Lower-River). The region is formed by eight regional county municipalities and 114 municipalities. In the south, it borders Maine of the United States, and the Canadian New Brunswick and the regions of Chaudière-Appalaches and Gaspésie–Îles-de-la-Madeleine.