Family name Korennoi (Коренной 
, Korennoi 
) , all over the world, is a rare surname. The last name Korennoi is characteristic of Eastern Europe, particularly Belarus, where it is a rare surname, Russia, and Ukraine. Much less frequently, Korennoi is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Коренной | Kazakhstan, Belarus, United States, Russia, Ukraine |
| Korennoi | Russia, United States, Georgia, Ukraine |
| viktor korennoi chess player (b. 1990) |
|