The Wawagosic River is a tributary of the Turgeon River flowing the municipality of Eeyou Istchee James Bay (Municipality), in the administrative region of Nord-du-Québec, in Quebec, in Canada.

The Wawagosic River flows mostly north, with some segment westward, across many marsh areas.

The name "Wawagotig" of Algonquin origin, meaning "river in zigzag", was also used to describe this body of water.

This latter meaning applies very well to the river whose clayey and rockless edges have been noted since the beginning of the century.

[2] The toponym "rivière Wawagosic" was made official on December 5, 1968, at the Bank of Place Names of the Commission de toponymie du Québec.