Last name Błaszczak (Błaszczak 
, Блащак 
) , across the world, is quite a rare cognomen. The last name Błaszczak is habitual in Poland, where it is quite a rare surname, Ukraine, where it is a rare surname, and Netherlands, where it is a very rare surname. In absolute terms, it is the most numerous in Eastern Europe, particularly Poland, Ukraine, and Russia.
| VARIANT | COUNTRY |
|---|---|
| Błaszczak | United Kingdom, Netherlands, Poland, United States |
| Блащак | Russia, Ukraine |
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stanisław błaszczak Lieutenant colonel of the Polish Army (1901-1983), US (b. 1901) |
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| jan błaszczak PL (b. 1880) |
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| czesław błaszczak Polish chess player, PL (b. 1907) |
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mariusz błaszczak Polish politician, PL (b. 1969) |
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| janina błaszczak PL (b. 1924) |
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jarosław błaszczak Polish entrepreneur, political scientist, Wikipedian, PL (b. 1985) |
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| zbigniew błaszczak PL (b. 1926) |
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| mirosława błaszczak-wacławik Polish philosopher, dissident, PL (b. 1952) |
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| joanna błaszczak Polish linguist, PL (b. 1971) |
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| dorota błaszczak sound engineer |
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| patryk błaszczak Polish diplomat, PL (b. 1980) |
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| barbara błaszczak researcher |
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| jarosław błaszczak Polish financier |
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| wioletta błaszczak researcher, ORCID id # 0000-0002-5989-7858, PL |
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| jarosław błaszczak Polish judge, PL |
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Jan, Piotr, Rafał, Daria, Dawid, Gosia, Laura, Lidia, Janek, Jacek, Jarek, Jakub, Jerzy, Julia, Edyta, Hanna, Filip, Ilona, Iwona, Zofia, Marcin, Madzia, Paweł, Kinga, Kasia, Kamil, Ela, Ewa, Ola, Sara, Anna, Ania, Arek, Adam, Kuba, Lena, Maciej, Nina, Maria, Marta, Marek, Magda, Mirek, Aneta, Artur, Agata, Beata, Karol, Zuza, and Monika