Surname Купьянский (Купьянский 
) , worldwide, is a very rare family name. The last name Купьянский is habitual in Kazakhstan, where it is a very rare surname, and Russia, where it is an extremely rare surname. Very seldom, Купьянский is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Купьянский | Kazakhstan, Russia |
Kupyanskii, and Kupyanskiy