Renfe Operadora is the state-owned company which operates freight and passenger train

Train

A train is a connected series of vehicles for rail transport that move along a track to transport cargo or passengers from one place to another place. The track usually consists of two rails, but might also be a monorail or maglev guideway.Propulsion for the train is provided by a separate...

s on the 1668-mm "Iberian gauge

Iberian gauge

Iberian gauge is the name given to the track gauge most extensively used by the railways of Spain and Portugal: namely ....

" and 1435-mm "European gauge

Standard gauge

The standard gauge is a widely-used track gauge . Approximately 60% of the world's existing railway lines are built to this gauge...

" networks of the Spanish

Spain

Spain , officially the Kingdom of Spain languages]] under the European Charter for Regional or Minority Languages. In each of these, Spain's official name is as follows:;;;;;;), is a country and member state of the European Union located in southwestern Europe on the Iberian Peninsula...

 national railway infrastructure

Infrastructure

Infrastructure is basic physical and organizational structures needed for the operation of a society or enterprise, or the services and facilities necessary for an economy to function...

 company ADIF (Administrador de Infraestructuras Ferroviarias).
The name RENFE is derived from that of the former Spanish National Railway Network, RENFE (Red Nacional de los Ferrocarriles Españoles) created on 24 January 1941 with the nationalization

Nationalization

Nationalisation, also spelled nationalization, is the process of taking an industry or assets into government ownership by a national government or state. Nationalization usually refers to private assets, but may also mean assets owned by lower levels of government, such as municipalities, being...

 of Spain's railways.