Around the world, Николаева (Николаева 
, Nikolaeva 
, Nikolayeva 
) is a rare girly given name. The first name Николаева is characteristic of Bulgaria, where it is quite a rare girly name, Romania, where it is a rare feminine name, and Greece. Not in comparison with a country's population, the name is most common in Eastern Europe, particularly Bulgaria, Romania, and Russia. Much more prevalently, Николаева is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Николаева | Moldova, Bulgaria, Kazakhstan, Belarus, Russia |
| Nikolaeva | Spain, Bulgaria, United States, Russia, Uzbekistan |
| Nikolayeva | Spain, Estonia, United States, Germany, Russia |
Nikolajeva, and Nikolajewa