Ariège is a 170 km long river in southern France. Its source is in the Pyrenees, near the border with Andorra. It flows north through the following départements and cities:

• Ariège (named after the river): Ax-les-Thermes , Foix, Pamiers .
• Haute-Garonne.

It flows into the Garonne in Portet-sur-Garonne , south of Toulouse.