Nikolayevsk is a town in Volgograd Oblast, Russia.
Nikolayevsk or Nikolaevsk may also refer to: Nikolayevsk Urban Settlement, a municipal formation which the town of district significance of Nikolayevsk in Nikolayevsky District of Volgograd Oblast, Russia is incorporated as Nikolaevsk, Alaska, a town in Alaska, United States Nikolayevsk-on-Amur, a town in Khabarovsk Krai, Russia A former name of Pugachyov, Saratov Oblast, Russia
See also Nikolayevsky (disambiguation) Nikolayev (disambiguation) Nikolayevka (disambiguation)