Castello-Molina di Fiemme (Castèl e Molina in local dialect) is a comune (municipality) in Trentino in the northern Italian region Trentino-Alto Adige/Südtirol, located about 35 km (22 mi) northeast of Trento. As of 31 December 2004, it had a population of 2,172 and an area of 54.5 km (21 sq mi).

The municipality of Castello-Molina di Fiemme contains the frazioni (subdivisions, mainly villages and hamlets) Predaia and Stramentizzo.

Castello-Molina di Fiemme borders the following municipalities: Carano, Cavalese, Altrei, Valfloriana, Pieve Tesino and Telve.

Demographic evolution