The Barcelona Symphony and Catalonia National Orchestra (Catalan: Orquestra Simfònica de Barcelona i Nacional de Catalunya, OBC; IPA: [urˈkestɾə simˈfɔnikə ðə βərsəˈɫonə j nəsiuˈnaɫ də kətəˈɫuɲə]) is a symphony orchestra based in Barcelona, Spain. Since April 1999, the Orchestra has had its headquarters at L'Auditori. Prior to that, from its foundation to 1998, the orchestra was resident at the Palau de la Música Catalana.