Libertador General San Martín is a town in Jujuy Province, Argentina, and capital of the Ledesma Department, located on the National Route Nº34. The town was founded under the name of Pueblo Nuevo Ledesma in 1899, on an area donated by the owners of the Ledesma sugar refinery. Two years later, the outline and later subdivision of the eight blocks surrounding the main square was made. In 1906 the railroad arrived, and the station was built half way from the town to the industrial centre.