Nizhyn (Ukrainian: Ніжин, Russian: Не́жин, Polish: Nieżyn) is a city located in the Chernihiv Oblast (province) of northern Ukraine, along the Oster River, 150 km (93 mi) north-east of the nation's capital, Kyiv. It is the administrative center of the Nizhyn Raion, though the city itself is also designated as a district in the oblast. Once a major city of the Chernigov Governorate, it had estimated population of 76,625 at the 2001 census.