Nikolayevsky () is a rural locality (a khutor) in Verkhnekardailskoye Rural Settlement, Novonikolayevsky District, Volgograd Oblast, Russia. The population was 154 as of 2010. There are 7 streets.
Nikolayevsky is located in steppe, on the Khopyorsko-Buzulukskaya Plain, on the bank of the Kardail River, 38 km northeast of Novonikolayevsky (the district's administrative centre) by road. Verkhnekardailsky is the nearest rural locality.