Last name Michalczuk (Michalczuk 
, Михальчук 
) , throughout the world, is a common family name. The last name Michalczuk is characteristic of Eastern Europe, particularly Ukraine, where it is quite a common surname, Belarus, and Poland, where it is quite a rare surname. Measured by absolute frequency, it is commonest in Eastern Europe, particularly Ukraine, Russia, and Belarus. Very seldom, Michalczuk is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Michalczuk | United Kingdom, Argentina, United States, Poland, Brazil |
| Михальчук | Ukraine, Kazakhstan, Russia, Belarus, Kyrgyzstan |
| grażyna michalczuk Polish economist, PL (b. 1950) |
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| andrzej michalczuk Polish footballer, PL (b. 1967) |
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| karolina michalczuk Polish boxer, PL (b. 1979) |
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| bartosz michalczuk researcher (ORCID 0000-0003-1554-3043) |
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| marta michalczuk researcher |
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| jerzy michalczuk Polish ornithologist, PL |
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| monika michalczuk researcher, PL |
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| jakub michalczuk PL (b. 1979) |
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