Family name Kruchinskiy (Kruchinskiy 
, Кручинский 
) , in all the world, is a rare surname. The last name Kruchinskiy is habitual in Belarus, where it is a rare surname, Russia, where it is a very rare surname, and Kazakhstan.
| VARIANT | COUNTRY |
|---|---|
| Kruchinskiy | Russia, United States |
| Кручинский | Kazakhstan, Russia, Belarus |