Surname Kryuchok (Kryuchok 
, Крючок 
) , around the world, is a rare last name. The surname Kryuchok is habitual in Ukraine, where it is quite a rare surname, Belarus, where it is a rare surname, and Kazakhstan, where it is a very rare surname. In absolute terms, this name is the most popular in Eastern Europe, particularly Ukraine, Russia, and Belarus.
| VARIANT | COUNTRY |
|---|---|
| Kryuchok | Spain, Russia, Ukraine, Belarus |
| Крючок | Kazakhstan, Russia, Kyrgyzstan, Belarus, Ukraine |