Plaça d'Espanya, also simply known as Espanya, is an interchange complex underneath Plaça d'Espanya, in the Barcelona district of Sants-Montjuïc, in Catalonia, Spain. It comprises the Barcelona terminus of the Llobregat–Anoia Line and a Barcelona Metro station complex served by lines 1 (L1) and 3 (L3). On the L1, the station is between Hostafrancs and Rocafort, and on the L3 it is between Poble Sec and Tarragona. The Llobregat–Anoia Line station is served by Barcelona Metro line 8 (L8), Baix Llobregat Metro lines S33, S4 and S8, and commuter rail lines R5, R6, R50 and R60. The services on the Llobregat–Anoia Line are operated by Ferrocarrils de la Generalitat de Catalunya (FGC), whilst the L1 and L3 are operated by Transports Metropolitans de Barcelona (TMB).

The Llobregat–Anoia Line is an unconnected metre gauge railway line linking Barcelona with the Baix Llobregat, Bages and Anoia regions, in Catalonia, Spain. Its name refers to the fact that it follows the course of the Llobregat and Anoia rivers for most of its length. Plaça d'Espanya station serves as the Barcelona terminus of the line, then continuing northwards to Martorell, where two main branches to Manresa and Igualada are formed. It also includes several freight branches, accounting for a total line length of 138 kilometres (86 mi) and 41 passenger stations.