The Saint-Jean River (in French: rivière Saint-Jean) flows through the municipalities of Sainte-Louise (MRC of L'Islet Regional County Municipality), as well as Saint-Onésime-d'Ixworth and La Pocatière, in the Kamouraska Regional County Municipality, in the administrative region of Bas-Saint-Laurent, in Quebec, in Canada.

[1] The toponym Rivière Saint-Jean was formalized on December 5, 1968, by the Commission de toponymie du Québec.

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