Cognomen Khairullaeva (Хайруллаева 
, Khairullaeva 
) , in the world, is a rare surname. The cognomen Khairullaeva is characteristic of Kazakhstan, where it is quite a rare surname, Kyrgyzstan, and Russia, where it is a very rare surname. Much less frequently, Khairullaeva is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Хайруллаева | Kazakhstan, Kyrgyzstan, Russia, Ukraine |
| Khairullaeva | Kazakhstan, United States, Russia |