Torfinnsvatnet is a lake in the municipality of Voss in Vestland county, Norway. The 6.41 square kilometres (2.47 sq mi) lake lies about 1.7 kilometres (1.1 mi) east of the lake Hamlagrøvatnet. The lake has a dam on the west side, which keeps the water level regulated for the local hydroelectric power plants. The river Torfinno connects the lake to the nearby lake Hamlagrøvatnet.

• List of lakes in Norway