Cognomen Byshok (Byshok 
, Бышок 
) , in the world, is a very rare family name. The family name Byshok is characteristic of Eastern Europe, particularly Belarus, where it is a very rare surname, Russia, and Ukraine, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Byshok | Ukraine |
| Бышок | Russia, Belarus |