Family name Rozumnyi (Розумный 
, Rozumnyi 
) , around the world, is a rare last name. The surname Rozumnyi is characteristic of Russia, where it is a rare surname, Czechia, and Kazakhstan, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Розумный | Russia, Kazakhstan, Ukraine |
| Rozumnyi | Russia, Czechia, Ukraine |
| peter rozumnyi |
|