Aran (Occitan: [aˈɾan]; Catalan: [əˈɾan]; Spanish: [aˈɾan]) (previously officially called in Occitan Val d'Aran, Catalan: Vall d'Aran, Spanish: Valle de Arán) is an administrative entity (formerly considered a comarca) in Lleida, Catalonia, Spain, consisting of the Aran Valley, 620.47 square kilometres (239.56 sq mi) in area, in the Pyrenees mountains, in the northwestern part of the province of Lleida.