The Fassa Valley (Ladin: Fascia, Italian: Val di Fassa, German: Fassatal) is a valley in the Dolomites in Trentino, northern Italy. As an administrative valley community (Italian: Comunità di valle, German: Talgemeinschaft) of Trentino, it is called Region Comun General de Fascia.
The valley is the home of the Ladin community in Trentino, which make up the majority of the population.