Cognomen Кирьязов (Кирьязов 
, Kir'Yazov , Kiryazov 
) , worldwide, is a rare family name. The last name Кирьязов is habitual in Bulgaria, where it is quite a rare surname, Kyrgyzstan, where it is a rare surname, and Russia, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Кирьязов | Kazakhstan, Russia, Kyrgyzstan, Ukraine |
| Kir'Yazov | Ukraine |
| Kiryazov | Bulgaria, Canada, United States, Russia, Ukraine |