Nikolayevsky District may refer to: Nikolayevsky District, Russia, name of several districts in Russia Mykolaiv Raion, Lviv Oblast, a former district of Lviv Oblast, Ukraine Mykolaiv Raion, Mykolaiv Oblast, a district of Mykolaiv Oblast, Ukraine Mykolaivka Raion, a district of Odessa Oblast, Ukraine See also Nikolayevsky (disambiguation) Nikolayevsk (disambiguation) Nikolayev (disambiguation)