The Erdre is a river in western France, right tributary to the Loire. Its source is in the Maine-et-Loire département, near La Pouëze. It flows through the départements Maine-et-Loire and Loire-Atlantique. It flows into the Loire in the city Nantes. Other towns on the Erdre, going downstream, are Candé, Riaillé, Nort-sur-Erdre and Sucé-sur-Erdre.