Surname Cherviak (Cherviak 
, Червяк 
) , in all the world, is quite a rare family name. The cognomen Cherviak is habitual in Eastern Europe, particularly Belarus, where it is quite a rare surname, Ukraine, and Russia, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Cherviak | Poland, Ukraine, Argentina |
| Червяк | Kazakhstan, Ukraine, Belarus, United States, Russia |