Last name Ніколаі (Ніколаі 
) , in all the world, is an extremely rare family name. The cognomen Ніколаі is habitual in Eastern Europe, particularly Ukraine, where it is an extremely rare surname. Likewise, Ніколаі is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ніколаі | Ukraine |