The Fortier River is a tributary of the north shore of the Panache River flowing in Eeyou Istchee James Bay (municipality), in Jamésie, in the administrative region of Nord-du-Québec, Quebec, Canada.
This river successively crosses the townships of Urban and Carpiquet.
Forestry is the main economic activity of the sector; recreational tourism activities, second. The Fortier River valley is served by the R1051 forest road (east-west), which runs north.
The surface of the Fortier River is usually frozen from early November to mid-May, however, safe ice circulation is generally from mid-November to mid-April.
At various times in history, this territory has been occupied by the Attikameks, the Algonquins and the Crees. The term "Fortier" is a family name of French origin.
The toponym "Fortier River" was officialized on December 5, 1968, at the Commission de toponymie du Québec, when it was created.