L'Hospitalet de Llobregat (Catalan pronunciation: [luspitəˈlɛd də ʎuβɾəˈɣat; ˌlɔs-]; Spanish: Hospitalet de Llobregat), often shortened to L'Hospitalet or just L'H, is a municipality of Spain, located to the immediate southwest of Barcelona, in the autonomous community of Catalonia. It is part of the Barcelona Metropolitan Area.
By population, it is the second largest in Catalonia and the sixteenth in Spain. It is one of the most densely populated cities in the European Union.