Arnave (French pronunciation: [aʁnav]; Occitan: Arnava) is a commune in the Ariège department of southwestern France.

The town sits in a deep valley between mountain peaks, the tallest of which is 1,300 metres (4,300 ft) above sea level.

The Chapel Saint-Paul d'Arnave is an example of Romanesque Architecture and is considered one of the oldest in the department.

The chapel was part of the Labaume Barony until the mid-20th century, when it was ceded to the town for restoration.

The site is also known for its black stone, believed to cure "Haut-Mal", or epilepsy, when the afflicted sleeps an entire night with his head beneath it.