The Morge (French pronunciation: [mɔʁʒ]) is a small river in eastern France (in the Isère department), a right tributary of the Isère. Its source is near the Col de Saint-Roch, northeast of Voiron. It flows through Voiron, and joins the Isère south of Voiron, opposite the town of Saint-Quentin-sur-Isère. It is 27.1 kilometres (16.8 mi) long.