Family name Blaszczyk (Blaszczyk 
, Błaszczyk ) , all over the world, is a common last name. The cognomen Blaszczyk is characteristic of Poland, where it is quite a common surname, Ireland, where it is quite a rare surname, and France, where it is a rare surname. Measured by absolute frequency, it is the most numerous in Poland, France, and Germany. More frequently, Blaszczyk is the forename as well as the last name.
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| Blaszczyk, Błaszczyk | Germany, France, Poland, United Kingdom, United States |
| michael blaszczyk German painter, DE (b. 1959) |
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| roman blaszczyk researcher (ORCID 0000-0001-7348-9837) |
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| maryjka b blaszczyk researcher (ORCID 0000-0002-9157-3052) |
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| amie taggart blaszczyk researcher |
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| stephanie a blaszczyk researcher ORCID ID = 0000-0002-1006-8725 |
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| tomasz blaszczyk researcher ORCID ID = 0000-0002-2818-402X |
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| nicole blaszczyk American beauty pageant contestant (b. 1987) |
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| regina lee blaszczyk |
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| anna blaszczyk PL (b. 1981) |
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Jan, Barbara, Ryszard, Dariusz, Grazyna, Jadwiga, Jolanta, Tadeusz, Marianna, Miroslaw, Krystyna, Grzegorz, Elzbieta, Wieslawa, Wojciech, Zbigniew, Stanislaw, Kazimierz, Krzysztof, Eugeniusz, Wladyslaw, Malgorzata, Czeslaw, Andrzej, Helena, Henryk, Ewa, Anna, Adam, Jzef, Maria, Marek, Pawel, Piotr, Jacek, Jerzy, Mieczyslaw, Irena, Zofia, Marian, Bogdan, Bozena, Danuta, Janina, Janusz, Tomasz, Teresa, Halina, Iwona, and Stanislawa