Surname Kochanovskii (Kochanovskii 
, Кочановский 
) , all over the world, is a rare family name. The cognomen Kochanovskii is characteristic of Belarus, where it is a rare surname, Russia, and Kazakhstan, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Kochanovskii | Russia, Belarus |
| Кочановский | Kazakhstan, Russia, Belarus |