Surname Koroban (Koroban 
, Коробан 
) , in all the world, is a rare last name. The surname Koroban is characteristic of Estonia, where it is a rare surname, Russia, and Belarus, where it is a very rare surname. In absolute terms, it most frequently occurs in Eastern Europe, particularly Russia, Ukraine, and Belarus. Very seldom, Koroban is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Koroban | Estonia, India, Russia |
| Коробан | Kazakhstan, Ukraine, Belarus, Russia |