Fonteno (Bergamasque: ) is a comune (municipality) in the Province of Bergamo in the Italian region of Lombardy, located about northeast of Milan and about northeast of Bergamo. As of 31 December 2004, it had a population of 680 and an area of .
The municipality of Fonteno contains the frazione (subdivision) Xino.
Fonteno borders the following municipalities: Adrara San Rocco, Endine Gaiano, Monasterolo del Castello, Parzanica, Riva di Solto, Solto Collina, Vigolo.