Last name Зайнуллаев (Зайнуллаев 
, Zainullaev, Zaynullaev 
) , worldwide, is a very rare family name. The family name Зайнуллаев is habitual in Kyrgyzstan, where it is a rare surname, Kazakhstan, where it is a very rare surname, and Russia.
| VARIANT | COUNTRY |
|---|---|
| Зайнуллаев | Kyrgyzstan, Kazakhstan, Russia |
| Zaynullaev | United States |