Family name Tregoub (Трегуб 
, Tregoub 
) , throughout the world, is quite a common cognomen. The last name Tregoub is habitual in Ukraine, where it is quite a rare surname, Kazakhstan, and Russia.
| VARIANT | COUNTRY |
|---|---|
| Трегуб | Kyrgyzstan, Russia, Belarus, Kazakhstan, Ukraine |
| Tregoub | United States |