The Caffaro is a 25 km river of northern Italy whose course lies within the Province of Brescia, sometimes forming the border with Trentino. It belongs to the basin of Lago d'Idro.Its source is on Cornone di Blumone, a peak in the Rhaetian Alps, near the Passo del Termine within the commune of Breno, in the Parco regionale dell'Adamello regional park.