Tirano is a town and comune in Valtellina, located in the province of Sondrio, Lombardy. It has 9,053 inhabitants and is adjacent to the Ita…Tirano is a town and comune in Valtellina, located in the province of Sondrio, Lombardy. It has 9,053 inhabitants and is adjacent to the Italy–Switzerland border. The river Adda flows through the town.