Balvatnet (Norwegian) or Bállávrre (Lule Sami) is a lake that lies in the municipality of Saltdal in Nordland county, Norway. The 41.46-square-kilometre (16.01 sq mi) lake is located on the border of Junkerdal National Park, about 2 kilometres (1.2 mi) west of the border with Sweden. The lake is regulated for hydroelectric power at the Daja Hydroelectric Power Station 16 kilometres (9.9 mi) to the north in Sulitjelma.

• List of lakes in Norway
• Geography of Norway