Aquitaine (Occitan: Aquitània; Basque: Akitania; Spanish: Aquitaniacode: es is deprecated ) is a part of southwestern France. It was once an administrative region but is now part of the administrative region of Nouvelle-Aquitaine. With over 41,000 square kilometers, it is one of the largest regions of mainland France (the largest of all French regions is French Guiana, in South America).
Its capital was Bordeaux, the largest city. The French name of the people living in the region is Aquitain.