Saverdun (French pronunciation: [savɛʁdœ̃]; Languedocien: Savardun) is a commune in the Ariège department in southwestern France.

Inhabitants of Saverdun are called Saverdunois in French.

Saverdun gave its name to the former city of Verdun, Quebec, Canada, now a borough of Montreal, which was founded in 1671 by Zacharie Dupuy, a native of Saverdun.

Count Raymond VII of Toulouse surrendered Saverdun to Imbert de Beaujeu and Hugh of La Tour-du-Pin, royal agents, during the war of 1242.

Saverdun station has rail connections to Toulouse, Foix and Latour-de-Carol.