The R7 is a line of Rodalies de Catalunya's Barcelona commuter rail service, operated by Renfe Operadora.

[1] R7 services started operating in 2005, initially running between Martorell and L'Hospitalet de Llobregat stations, via the Vallès Occidental region.

It became the first passenger service to use the Castellbisbal–Mollet-Sant Fost railway, originally designed to serve as Barcelona's rail freight bypass.

[3][4] In 2011, the R7 was shortened, so that it began to operate in its current configuration between Sant Andreu Arenal and Cerdanyola Universitat stations.

[7] The following table lists the name of each station served by line R7 in order from south to north; the station's service pattern offered by R7 trains; the transfers to other Rodalies de Catalunya lines, including both commuter and regional rail services; remarkable transfers to other transport systems; the municipality in which each station is located; and the fare zone each station belongs to according to the Autoritat del Transport Metropolità (ATM Àrea de Barcelona) fare-integrated public transport system and Rodalies de Catalunya's own fare zone system for Barcelona commuter rail service lines.