CHIVASSO, a small city of Piedmont, kingdom of Sardinia, province of Turin, in a fertile plain on the left bank of the Po, 15 miles N.E. of Turin. It was formerly considered as the key of Piedmont, and was strongly fortified, but is now only inclosed by a single wall with two gates leading to two suburbs. The front of the church of San Pietro is decorated with ornaments and entire statues in terra cotta, of great elegance, but much defaced. Of the ancient palace of the Counts of Montferrat, an octagonal tower still remains. Pop. 8000.