Nesvizh, Niasviž (Belarusian: Нясві́ж [nʲaˈsʲvʲiʐ]; Russian: Не́свиж; Polish: Nieśwież; Lithuanian: Nesvyžius; Yiddish: ניעסוויז; Latin: Nesvisium) is a city in Belarus. It is the administrative center of the Nyasvizh District (rajon) of Minsk Region and location of the Niasviž Castle World Heritage Site.