The Parc de la Ciutadella is a park on the northeastern edge of Ciutat Vella, Barcelona, Catalonia, Spain. For decades following its creation in the mid-19th century, this park was the city's only green space. The 31 hectares grounds include the city zoo, the Palau del Parlament de Catalunya, a small lake, museums, and a large fountain designed by Josep Fontserè.

The parks and gardens of Barcelona cover an area of 2,784 hectares. Its management depends on the Municipal Institute of Parks and Gardens of Barcelona, a body under the Barcelona City Council. Since the 19th century —and especially in the 20th century— Barcelona has been committed to the development of green areas in the city, and is currently one of the European cities with the most roadside trees. In 2001 the Institute of Parks and Gardens received ISO 14001 certification for the conservation and management of green spaces and public roadside trees.