Lønavatnet is a lake in the municipality of Voss in Hordaland county, Norway. The 2.91-square-kilometre (1.12 sq mi) lake lies along the river Strandaelvi which runs from Vinje south to Vossevangen. The lake lies about 4 kilometres (2.5 mi) north of the village of Vossevangen, with the European route E16 highway running along the western shore.