Cognomen Čubej (Čubej, Чубей 
) , in the world, is a rare last name. The surname Čubej is habitual in Ukraine, where it is a rare surname, Kazakhstan, where it is a very rare surname, and Kyrgyzstan. Not in comparison with a country's population, it most frequently occurs in Ukraine, Russia, and Kazakhstan.
| VARIANT | COUNTRY |
|---|---|
| Чубей | Kyrgyzstan, Kazakhstan, Ukraine, Russia |