Nordagutu is a village in Midt-Telemark Municipality in Telemark county, Norway. The village is located along the river Sauarelva, just south of the southern end of the lake Heddalsvatnet. The village of lies about 5 km south of the village of Holtsås, about 5 km northeast of the village of Akkerhaugen, and just across the river from the village of Sauherad. The 0.37 km2 village has a population (2022) of 325 and a population density of 886 PD/km2. Nordagutu train station is a part of the Bratsberg Line, and it serves as a junction between the Vestfold Line and Sørlandet Line.