| Official Name: | Nikolayevka |
| Native Name: | Николаевка |
| Native Name Lang: | ru |
| Settlement Type: | Selo |
| Pushpin Map: | Russia Belgorod Oblast#Russia |
| Subdivision Type: | Country |
| Subdivision Name: | Russia |
| Subdivision Type1: | Region |
| Subdivision Name1: | Belgorod Oblast |
| Subdivision Type2: | County |
| Subdivision Type3: | District |
| Subdivision Name3: | Alexeyevsky District |
| Subdivision Type4: | Municipality |
| Utc Offset1: | +3:00 |
| Coordinates: | 50.35°N 91°W[1] |
Nikolayevka (Russian: Николаевка) is a rural locality (a selo) in Alexeyevsky District, Belgorod Oblast, Russia. The population was 119 as of 2010.[2] There is 1 street.