Cognomen Nykolov (Николов 
, Nykolov 
) , in the entire world, is a common family name. The cognomen Nykolov is habitual in Eastern Europe, particularly Bulgaria, where it is a common surname, Russia, where it is a rare surname, and Belarus.
| VARIANT | COUNTRY |
|---|---|
| Николов | Ukraine, Kazakhstan, Belarus, Bulgaria, Russia |
| Nykolov | Spain |