Nesvizh (Niasviž, Belarusian: Нясві́ж ; Russian: Не́свиж; Polish: Nieśwież; Yiddish: ניעסוויז; Latin: Nesvisium) is a city in Belarus. It is the administrative center of the Nesvizh District (rajon) of Minsk Province and location of the Nesvizh Castle World Heritage Site. Its 2009 population is 14,300.