Surname Kupenov (Kupenov 
) , worldwide, is a rare cognomen. The family name Kupenov is habitual in Bulgaria, where it is quite a rare surname, Kazakhstan, where it is a very rare surname, and Germany, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Kupenov | Kazakhstan, Bulgaria, United States, Germany, Russia |
| georgi kupenov Bulgarian footballer, BG (b. 1997) |
|