Berzo Demo (Camunian: Bèrs Dém) is an Italian comune in Val Camonica, province of Brescia, in Lombardy, northern Italy.

The town of Berzo Demo is nestled on the southern slopes of the Pian della Regina. It is formed by three villages: the more downstream is Demo, the central one is Berzo and on top is Monte. It is bounded by other communes of Cedegolo, Cevo, Malonno, Paisco Loveno, Sellero, Sonico.

Monday 6 April 1299, the consuls of the vicinia of Berzo and Demo go to Cemmo where is Cazoino Capriolo, Chamberlain of the Bishop of Brescia Berardo Maggi. Here swear according to the usual formula loyalty to the bishop, and pay the tithe due.