Gunungsitoli is a city located in North Sumatra province, Indonesia, on the Indian Ocean island of Nias, west of Sumatra. Gunungsitoli is the island's only city and is the main hub for the island and surrounding smaller islands. Located on the north-eastern side of Nias island, the city was historically a series of fortifications made by the Dutch colonial administration in the 1600s to defend against frequent raids from Nias tribes, especially those from southern parts of the island. Until 1914, it was the only part of the island that was effectively controlled by the Dutch.

Pandita Roos Telaumbanua was an Indonesian Nias priest, politician and bureaucrat, who served as the Regent of Nias, acting Mayor of Medan, acting Governor of Sumatra, and the member of People's Representative Council.