Feragen is a lake in the municipality of Røros in Trøndelag county, Norway. The 15.78-square-kilometre (6.09 sq mi) lake is located about 25 kilometres (16 mi) east of the town of Røros. The lake flows out into the lake Håsjøen and the Håelva river. There is a canal connecting Feragen to Femunden.

The village of Feragen is a very small village situated at the northern end of the lake, about 11 kilometres (6.8 mi) south of Brekken.

• List of lakes in Norway