Cognomen Kiriakova (Кирякова 
, Кирьякова 
, Kiriakova 
) , throughout the world, is quite a rare surname. The cognomen Kiriakova is characteristic of Bulgaria, where it is quite a common surname, Russia, where it is quite a rare surname, and Kazakhstan.
| VARIANT | COUNTRY |
|---|---|
| Кирякова | Kazakhstan, Russia, Belarus, Bulgaria, Ukraine |
| Кирьякова | Kazakhstan, Russia, Kyrgyzstan, Belarus, Ukraine |
| Kiriakova | Russia, Georgia, Bulgaria, United States, Canada |
| Кириакова | Russia |