Massazza is a small comune (municipality) in the Province of Biella in the Italian region Piedmont, located about 60 kilometres (37 mi) northeast of Turin, Italy and about 4 kilometres (2 mi) southeast of Biella, Italy.

Massazza borders the following municipalities: Benna, Cossato, Mottalciata, Salussola, Verrone, Villanova Biellese.

It is home to a castle, built on a spur above the Biellese Baraggia natural area.

The edifice was mentioned for the first time in 1239.

This article on a location in the Province of Biella is a stub.