Family name Zelenkov (Зеленков 
, Zelenkov 
) , all around the world, is quite a common surname. The last name Zelenkov is characteristic of Eastern Europe, particularly Belarus, where it is quite a rare surname, Bulgaria, and Russia. Not in comparison with a country's population, it is commonest in Eastern Europe, particularly Russia, Belarus, and Ukraine.
| VARIANT | COUNTRY |
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| Зеленков | Kazakhstan, Russia, Belarus, Bulgaria, Ukraine |
| Zelenkov | Germany, Russia, Belarus, Bulgaria, United States |
| kostadin zelenkov Bulgarian footballer, BG (b. 1977) |
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| a v zelenkov researcher |
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| lev zelenkov researcher (ORCID 0000-0001-6387-7553) |
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| p v zelenkov researcher |
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| artiom zelenkov Russian volleyball player, RU (b. 1987) |
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Mr, Kosta, Pavel, Peter, Petur, Roman, Denis, Danil, David, Jovan, Tanya, Tomas, Nenad, Erica, Vadim, Yegor, Maksim, Sergii, Sergey, Sergei, Sofija, Alexey, Karen, Artur, Artem, Anton, Max, Mary, Mara, Mike, Stas, Alex, Anna, Paul, Gena, Lisa, Andrei, Jane, Niki, Egor, Vlad, Ilya, Ivan, Igor, Oleg, Yuri, Maxim, Aleks, John, and Andrey