Ferrocarriles Argentinos (FA) (in English: Argentine Railways) was a state-owned company that managed the entire Argentine railway system for nearly 45 years. It was formed in 1948 when all the private railway companies were nationalised during Juan Perón's first presidential term, and transformed into the Empresa de Ferrocarriles del Estado Argentino (EFEA) (in English: Argentine State Railways Company).
FA managed both, passenger and freight services, including long-distance and commuter rail trains in the metropolitan area of Buenos Aires.
The company was broken up under the government of Carlos Menem following the privatisation of the railways; however in 2015 the government of Cristina Kirchner revived the brand for use on state-owned railways.
In April 1946 some British companies executives, such as Reginald Leeper (then ambassador in Argentina) and Wilfred Eady, representative of several railway companies in Argentina, started to make the arrangements for the sale of their companies to the Argentine state. A commission led by Eady arrived in Buenos Aires during the winter of 1946. The Argentine Government approved the creation of a joint company to operate British railways, reestablishing the tax exemptions that had been in force during Law n° 5,315, also named "Mitre Law".
On December 17, 1946, a contract was signed by Miguel Miranda, president of Instituto Argentino de Promoción del Intercambio and the ambassador Wladimir D'Ormesson for the sale of French companies in Argentina at a global price of A$ 182,796,173 (about USD 45 million). That included Compañía General de Buenos Aires, Province of Santa Fe and Rosario and Pto. Belgrano Railways.