The 8th constituency of Isère is one of ten French legislative constituencies in the Isère département.

After the 2010 redistricting of French legislative constituencies added a tenth constituency to Isère, the 8th constituency consists of the (pre-2015 cantonal re-organisation) cantons of Heyrieux, Vienne-Nord, Vienne-Sud, Auberives-sur-Varèze, Cheyssieu, Clonas-sur-Varèze, Saint-Alban-du-Rhône, Saint-Clair-du-Rhône, Saint-Maurice-l'Exil, Saint-Prim and Vernioz and the communes of Assieu.

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