The railway natinalisation in Argentina occurred on March 1, 1948, during President Juan Perón's first term of office, when the seven British- and three French-owned railway companies then operating in Argentina, were purchased by the state. These companies, together with those that were already state-owned, where grouped, according to their track gauge and locality, into a total of six state-owned companies which later became divisions of the state-owned holding company Ferrocarriles Argentinos.

The Central Argentine Railway, referred to as CA below, was one of the Big Four broad gauge, 5 ft 6 in British companies that built and operated railway networks in Argentina. The company had been established in the 19th century, to serve the provinces of Santa Fe and Córdoba, in the east-central region of the country. It would later extend its operations to Buenos Aires, Tucumán, and Santiago del Estero. The railroad had a complicated relationship with its employees in the 1910s, and then it had a complicated relationship with the government of Argentina in the 1920s.