| En Name: | Nikolayevsk |
| Ru Name: | Николаевск |
| Coordinates: | 50.0333°N 72°W |
| Map Label Position: | top |
| Federal Subject: | Volgograd Oblast |
| Adm District Jur: | Nikolayevsky District |
| Adm Selsoviet Jur: | Nikolayevsk |
| Adm Selsoviet Type: | Town of district significance |
| Adm Ctr Of1: | Nikolayevsky District |
| Adm Ctr Of2: | town of district significance of Nikolayevsk |
| Inhabloc Cat: | Town |
| Mun District Jur: | Nikolayevsky Municipal District |
| Urban Settlement Jur: | Nikolayevsk Urban Settlement |
| Mun Admctr Of1: | Nikolayevsky Municipal District |
| Mun Admctr Of2: | Nikolayevsk Urban Settlement |
| Pop 2010Census: | 15075 |
| Established Date: | 1747 |
| Current Cat Date: | 1967 |
Nikolayevsk (Russian: Никола́евск) is a town and the administrative center of Nikolayevsky District in Volgograd Oblast, Russia, located on the left (eastern) shore of the Volga River. Population:
It was founded in 1747 as the khutor of Dmitriyev (Russian: Дмитриев), which was reorganized into a sloboda in 1794 and renamed Nikolayevskaya sloboda (Russian: Николаевская слобода). It was granted town status and renamed Nikolayevsk in 1967.
Within the framework of administrative divisions, Nikolayevsk serves as the administrative center of Nikolayevsky District. As an administrative division, it is incorporated within Nikolayevsky District as the town of district significance of Nikolayevsk. As a municipal division, the town of district significance of Nikolayevsk is incorporated within Nikolayevsky Municipal District as Nikolayevsk Urban Settlement.[1]