Cognomen Заынуллаев (Заынуллаев 
) , all over the world, is an extremely rare surname. The last name Заынуллаев is habitual in Eastern Europe, particularly Russia, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Заынуллаев | Russia |
Zaynullaev, and Zaynullayev