Zec de la Rivière-Saint-Jean-du-Saguenay is a zone d'exploitation contrôlée (controlled harvesting zone) (zec) located in the municipalité of L'Anse-Saint-Jean, in Le Fjord-du-Saguenay Regional County Municipality (RCM), in administrative region of Saguenay–Lac-Saint-Jean, in Quebec, in Canada.

The "Zec de la Rivière-Saint-Jean-du-Saguenay" administer some segments of Saint-Jean River.

While the zec de l'Anse-Saint-Jean administers the public lands on a forested territory around the river.

The toponym "Zec de la Rivière-Saint-Jean-du-Saguenay" was officialized on October 7, 1994 at the Bank of place names of Commission de toponymie du Québec (Geographical Names Board of Quebec).

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