Puerta de Atocha is the largest railway station in Madrid. It is the main station of the commuter train (Cercanías), the southern intercity and regional trains, as well as from Barcelona, Seville and Malaga (Andalucía), Valencia and Alicante (Levante) AVE high speed train. These train services are operated by the Spanish national railway company Renfe. As of 2018, the station has a daily service in Marseille, France.

The station is located in the Atocha neighbourhood of the Arganzuela district. The Atocha station for Plaza del Emperador Carlos V is a transport complex consisting of the Spanish National Railways Madrid Atocha Cercanías and Madrid Puerta de Atocha station and the Madrid underground station Atocha RENFE.