Surname Купенов (Купенов 
, Kupenov 
) , across the world, is a rare cognomen. The surname Купенов is characteristic of Bulgaria, where it is quite a rare surname, Kazakhstan, where it is a rare surname, and Russia, where it is a very rare surname. Much less frequently, Купенов is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Купенов | Ukraine, Russia, Bulgaria, Kazakhstan |
| Kupenov | Kazakhstan, Russia, United States, Germany, Bulgaria |
| николай кръстев купенов BG (b. 1922) |
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| огнян купенов Bulgarian actor, BG |
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| купен купенов BG |
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