Girls at an offering house at the entrance of a kampong in South Nias
Nias Selatan (South Nias) Regency is a regency in North Sumatra province, Indonesia. In 2010, the regency covered an area of 1,625.91 square kilometres and according to the 2010 census had a population of 289,876. Its seat is Teluk Dalam. Apart from the southern portion of Nias Island, the regency also includes the smaller Batu Islands (Pulau-pulau Batu) to the south, lying between Nias and Siberut.