The Spanish city of Bilbao contains a dense urban rail network served by multiple operators, track gauges and types.

It currently consists of thirteen lines, counting those of metro and tram as well as suburban rail; complemented by a wide-covering bus network, as well as other means of transportation including funiculars.

The lines converge in the capital and reach six of the seven regions of the province: Arratia-Nervión, Busturialdea-Urdaibai, Duranguesado, Gran Bilbao, Enkarterri and Uribe.

Bilbao's first metro line opened in 1995, has been expanded continually over the years and attracted a ridership of 90 million passengers in 2018.

The entire 181.1-kilometre (112.5 mi) network[2] uses 1,000 mm (3 ft 3+3⁄8 in) narrow gauge rail tracks which have been owned by the Basque Government since their transferral from the Spanish government; the rail tracks and stations were part of the Feve network until its transferral.