Family name Zheleznyak (Железняк 
, Zheleznyak 
) , throughout the world, is a common cognomen. The last name Zheleznyak is habitual in Eastern Europe, particularly Ukraine, where it is quite a common surname, Belarus, where it is quite a rare surname, and Russia.
| VARIANT | COUNTRY |
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| Железняк | Ukraine, Kazakhstan, Belarus, Russia, Kyrgyzstan |
| Zheleznyak | Ukraine, Albania, Belarus, Russia, United States |
| vladimir zheleznyak Soviet writer (b. 1904) |
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oksana zheleznyak Kazakhstani association football player, KZ (b. 1987) |
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| i s zheleznyak researcher |
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| mark zheleznyak researcher |
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Mr, Sasha, Sveta, Alina, Artem, Bella, Boris, Klara, Pavel, Petro, Roman, Denis, David, Dasha, Gitai, Tanya, Tamir, Tomas, Timur, Elena, Vadim, Irina, Misha, Maxim, Maria, Yury, Ms, Max, Len, Mark, Mala, Alex, Alla, Anna, Dima, Gleb, Yulia, Lina, Nina, Vera, Vlad, Ilya, Ivan, Igor, Olga, Oleg, Oleh, Yana, Tori, and Yuriy