The Ferrovia Alta Valtellina (FAV) is a railway line in Italy which connects Sondrio, in Valtellina, to Tirano in Alta Valtellina (Upper Tellina Valley). The railway company was established in 1899 and the line opened in 1902. Many railways in Italy were nationalized in 1905 but the Ferrovia Alta Valtellina escaped and was not nationalized until 1970.