Cognomen Płaczek (Płaczek 
) , worldwide, is quite a rare last name. The surname Płaczek is characteristic of Eastern Europe, particularly Poland, where it is quite a rare surname.
| VARIANT | COUNTRY |
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| Płaczek | Poland, United Kingdom |
| marian płaczek (b. 1886) |
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| edward płaczek PL (b. 1929) |
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adrianna płaczek Polish handball player, PL (b. 1993) |
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| janusz płaczek (b. 1956) |
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| janusz płaczek PL (b. 1957) |
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| jadwiga płaczek Polish Righteous Among the Nations, PL |
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| bartłomiej płaczek Polish computer scientist |
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| wiesław płaczek Polish physicist, PL |
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| małgorzata płaczek researcher, PL |
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| maria płaczek Polish Righteous Among the Nations, PL |
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| marek płaczek researcher (ORCID 0000-0002-5585-7621) |
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| łukasz płaczek Polish sportsperson and athletics competitor, PL (b. 1983) |
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| józef płaczek PL |
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Jan, Ilona, Iwona, Oskar, Marian, Marcin, Maciej, Monika, Sylwia, Szymon, Adrian, Bartek, Kalina, Kamila, Kacper, Patryk, Robert, Dennis, Daniel, Danuta, Damian, Dorota, Filip, Tomek, Jakub, Jacek, Ewa, Anna, Ania, Adam, Kuba, Maria, Marta, Marek, Artur, Agata, Joanna, Basia, Karol, Kamil, Kasia, Kinga, Paweł, Piotr, Rafał, Darek, Dawid, Gosia, Beata, and Tomasz