The Gascon language is an Occitan dialect mostly spoken in Gascony (in the French departments of Pyrénées-Atlantiques, Hautes-Pyrénées, Landes, Gers, Gironde, a part of Lot-et-Garonne, a part of Haute-Garonne, and a part of Ariège), and in the small Spanish valley Val d'Aran, in the Northwest of Catalonia. Some linguists consider it a separate language but usually these are not speakers of Gascon. Gascon comprises four subdialects:
- Landese (Landais)
- Bearnese (Béarnais)
- Ariegese (Ariégeois)
- Aranese (Aranès)
Gascon and the Basque language have had mutual influences.