Cognomen Waszczuk (Waszczuk 
) , globally, is quite a rare last name. The cognomen Waszczuk is habitual in Poland, where it is quite a rare surname, Argentina, where it is a rare surname, and Ireland. Not in comparison with a country's population, it is commonest in Poland, Argentina, and the United States. More frequently, Waszczuk is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Waszczuk | United Kingdom, United States, Poland, Argentina, Brazil |
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jerzy waszczuk PL (b. 1937) |
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henry waszczuk Canadian football player, CA (b. 1950) |
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| jadwiga waszczuk Polish Righteous Among the Nations, PL (b. 1901) |
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| ewa waszczuk researcher (ORCID 0000-0001-5618-4935) |
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| monika a waszczuk researcher (ORCID 0000-0003-1775-1970) |
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| katarzyna waszczuk researcher |
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| dorota waszczuk |
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| elżbieta waszczuk PL |
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| patrycja waszczuk Polish chess player, PL |
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