The Sèvre Niortaise is a river in western France, flowing into the Atlantic Ocean. Its source is in the Deux-Sèvres département, near Sepvret, north of Melle.
It flows through the following départements and towns:
It flows into the Atlantic Ocean in Bourg-Chapon, north of the city La Rochelle. The largest city along the river is Niort, hence the name Sèvre niortaise (distinguishing it from the Sèvre Nantaise).