Vassfjellet is a mountain on the border of the municipalities of Melhus and Trondheim in Trøndelag county, Norway. The eastern side of the mountain hosts a ski resort, Vassfjellet Skisenter. The 710 m tall mountain lies about 4 km southeast of the village of Melhus. At the top there is a radio and television transmitting tower, which extends 220 m above the top of the tall mountain. A road leading to the top has been built for maintenance access to the tower. This road starts in the village of Kvål in Melhus, but is closed to public vehicle access. It is however an excellent route for hiking. The Vassfjell Chapel is located on the northeast side of the mountain in Klæbu.

Name

The first element is the genitive case of vatn which means "water", "lake", or "tarn" and the last element is the finite form of fjell which means "mountain". (There is a small tarn near the top of Vassfjellet.)