Drevsjø is a village in Engerdal municipality in Innlandet county, Norway. It is located about 16 kilometres (9.9 mi) north of the village of Engerdal and about 12 kilometres (7.5 mi) southeast of the village of Sorken. The village takes its name from the lake Drevsjø which lies near the village. The Drevsjø Church is located in the village. The village has some commercial businesses serving the municipality such as grocery stores plus a large sawmill.