Sagrera railway station is a major through station under construction in the Barcelona districts of Sant Andreu and Sant Martí, in Catalonia, Spain. It is intended to serve as the central station for northern and eastern Barcelona, with Sants serving as the central station for southern and western Barcelona. Together with El Prat de Llobregat and Sants, currently the only high-speed rail stations in the Barcelona area, it will be on the Madrid–Barcelona high-speed rail line. It will also be on the conventional Barcelona–Cerbère and Barcelona–Mataró–Maçanet-Massanes railways. Once fully completed, it will be a major public transport hub, with dedicated stations on Barcelona Metro lines 4 and 9/10, as well as a bus station. The complex will be fully underground excepting for the station building, with two levels of platforms, accounting for a total of 18 railway tracks.

Barcelona Sants is the main railway station in Barcelona, owned by Adif, the railway infrastructure agency of Spain. It has become the most important transport hub of the city - being the centre of Rodalies de Catalunya including Barcelona suburban railway services and regional services, as well as the main inter-city station for national and international destinations. The station is named after Sants, the neighbourhood of Barcelona in which it is located. New parts of the station have recently been remodeled to accommodate the Spanish high-speed train AVE in the city, which started serving the city on 20 February 2008. There is also an adjacent international bus station bearing the same name, and a link to the Sants Estació metro station that serves the railway station.