Béarn is one of the traditional provinces of France, located in the Pyrenees mountains and in the plain at their feet, in Southwestern France. Along with the three Basque provinces of Soule, Lower Navarre and Labourd, the Principality of Bidache, as well as small parts of Gascony, it forms the current Pyrénées-Atlantiques department. The capitals of Béarn were successively Beneharnum, Morlaàs, Orthez and then Pau.

Labourd is a former French province and part of the present-day Pyrénées Atlantiques département of Nouvelle-Aquitaine region. It is one of the traditional Basque provinces, and identified as one of the territorial component parts of the Basque Country by many, especially by the Basque nationalists.