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 | Kyrgyzstan, Kazakhstan, Russia, Ukraine |
| Kir'Yazov | Ukraine |
| Kiryazov | Russia, Bulgaria, United States, Canada, Ukraine |