Holsavatnet is a lake which lies in Sunnfjord Municipality in Vestland county, Norway. The lake is located about 12 kilometres (7.5 mi) east of the town of Førde and about 9.5 kilometres (5.9 mi) east of the village of Bruland. The village of Holsen lies at the eastern end of the lake. The European route E39 highway passes 3 kilometres (1.9 mi) west of the lake. The water from the lake eventually flows into the river Jølstra.