Rambergssjøen or Rambergsjøen is a lake in the municipality of Røros in Trøndelag county, Norway. The lake is located along the river Håelva, just downstream from the lake Håsjøen. The 3.1-square-kilometre (1.2 sq mi) lake is located about 12 kilometres (7.5 mi) southeast of the town of Røros.[1]