Breen is a village in Os Municipality, in Innlandet, Norway. Breen lies at 750 m above sea level, at the foot of the Forollhogna mountains. The nearest city is Trondheim, 107 km to the northwest. Among the landmarks around are Røros Church (14.8 km), Os Church (5.3 km) and Dalsbygda Church (1.0 km). Among the natural features are Storfossen (9.7 km).