Surname Чьорнобай (Чьорнобай 
) , all around the world, is an extremely rare last name. The surname Чьорнобай is habitual in Eastern Europe, particularly Ukraine, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Чьорнобай | Ukraine |
Chornobai, Chornobay, and Tchornobai