Otnes is a village in Rendalen Municipality in Innlandet county, Norway. The village is located along the lake Lomnessjøen, about 4.5 km north of the village of Åkre. The municipal centre of Bergset lies about 15 km to the north of Otnes. The 0.49 km2 village has a population (2021) of 263 and a population density of 541 PD/km2. Otnes was the administrative centre of the old municipality of Ytre Rendal which existed from 1880 until 1965 when it was merged into Rendalen. Otnes has one church in the village, Ytre Rendal Church. The tiny village contains a Gas station, Grocery store, small Bank inside the grocery store, Library and a Doctor's office.