La Sagrera-Meridiana, simply known as La Sagrera, is an interchange complex underneath Avinguda Meridiana, in the Barcelona district of Sant Andreu, in Catalonia, Spain. It consists of a Rodalies de Catalunya station and three Barcelona Metro stations. The Rodalies de Catalunya station is located in the Meridiana Tunnel on the Lleida to Barcelona via Manresa railway, between Sant Andreu Arenal and Arc de Triomf, and is operated by Renfe Operadora. It is served by Barcelona commuter rail service lines R3 and R4, as well as regional rail line R12. The Barcelona Metro stations are on lines 1 (L1) and 5 (L5), as well as the northern section of line 9/10, and are operated by Transports Metropolitans de Barcelona (TMB). On the L1, the station is between Navas and Fabra i Puig, on the L5 between Camp de l'Arpa and Congrés, and on the L9/L10 between Plaça Maragall (future) and Sagrera - TAV. The station is also projected to become the terminus of the L4 once the extension from La Pau opens. A number of interurban bus services stop near the station.

Arc de Triomf is a Rodalies de Catalunya and Barcelona Metro interchange complex. It is named after the adjacent triumphal arch of the same name near which it is situated, in the Barcelona district of Eixample in Catalonia, Spain. The Rodalies station is served by Barcelona commuter rail service lines R1, R3 and R4, as well as Girona commuter rail service line RG1 and regional line R12. The Barcelona Metro station is served by TMB-operated line L1.