Cognomen Grishanok (Grishanok 
, Гришанок 
) , in all the world, is a rare family name. The last name Grishanok is habitual in Russia, where it is a very rare surname, Kazakhstan, and Ukraine.
| VARIANT | COUNTRY |
|---|---|
| Grishanok | Russia |
| Гришанок | Kazakhstan, Russia, Ukraine |