Neslandsvatn is a village in Drangedal Municipality in Telemark county, Norway. The village is located along the small lake Neslandsvatnet, about 16 km to the southeast of the village of Prestestranda. The village of Henseid is located about 12 km to the northeast, across the large lake Toke. Kroken Church is located about 3 km to the southwest of the village. The 0.33 km2 village has a population (2022) of 296 and a population density of 891 PD/km2. The village has a station on the Sørlandsbanen railway line. It is also a popular skiing and snowboarding area.