Cognomen קריוצ'קוב (Kryuchkov 
, Krioutchkov 
, קריוצ'קוב 
) , worldwide, is quite a rare family name. The cognomen קריוצ'קוב is characteristic of Lithuania, where it is a rare surname, Bulgaria, and Russia. In absolute terms, it is the most numerous in Russia, Uzbekistan, and the United States.
| VARIANT | COUNTRY |
|---|---|
| Kryuchkov | Uzbekistan, Russia, Belarus, Bulgaria, United States |
| Krioutchkov | Canada, Spain, United Kingdom, United States |
| קריוצ'קוב | Israel |
Kriuchkov, Kriuczkow, Krjucskov, Krjutschkow, and Крючков