Oltressenda Alta (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 195 and an area of .
Oltressenda Alta borders the following municipalities: Ardesio, Clusone, Gromo, Rovetta, Villa d'Ogna, Vilminore di Scalve, Oltressenda alta has two majority localities: Nasolino and Valzurio.