Poso (Old Spelling: Posso) is the administrative capital of Poso Regency, Indonesia. It is the main port and transportation hub for the central-southern coast of Central Sulawesi. Its urban area consists of three districts, Poso Kota, North Poso Kota, and South Poso Kota. Poso lies in the middle of the province on the shore of the Gulf of Tomini, right in the central part of Sulawesi island. With a total population of 47,477 in 2020, it is one of the biggest and the oldest towns in the province.