The Ardanabia (French pronunciation: [aʁdanabja]; also known as Ardanabie, Ardanavie, Ardanavy, Ardanavia) is a left tributary of the Adour, in the French Basque Country, in Aquitaine, Southwest France. It is 25.7 km (16.0 mi) long.

The Ardanabia rises in the moors of Hasparren, flows north meandering between Mouguerre and Briscous and joins the Adour below Urcuit.

The name Ardanabia proceeds from ardan-habia, that can be analyzed as 'river course in vineyards'.