Cognomen Sieroń (Sieroń 
) , all over the world, is a rare last name. The cognomen Sieroń is characteristic of Eastern Europe, particularly Poland, where it is a rare surname.
| VARIANT | COUNTRY |
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| Sieroń | Poland |
| antoni sieroń PL (b. 1866) |
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| filip sieroń PL (b. 1898) |
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| gerard sieroń Polish gynecologist, PL (b. 1927) |
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| aleksander sieroń Polish internist, cardiologist, PL (b. 1948) |
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| aleksander sieroń Polish molecular biologist, geneticist, PL (b. 1956) |
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| lesław sieroń researcher, PL (b. 1969) |
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| karolina sieroń Polish physician, researcher, PL (b. 1975) |
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| dominik sieroń researcher |
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| łukasz sieroń researcher |
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| dorota sieroń-galusek Polish political scientist, cultural studies scholar, PL |
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Aga, Daniel, Damian, Dorota, Leszek, Janusz, Joanna, Tomasz, Mariusz, Martyna, Michał, Andrzej, Bartosz, Justyna, Natalia, Ewelina, Izabela, Łukasz, Angelika, Adrianna, Karolina, Krystyna, Renata, Robert, Konrad, Kaśka, Anna, Kuba, Maria, Marta, Marek, Kasia, Paweł, Radek, Lidia, Jacek, Dominika, Jakub, Tomek, Edyta, Iwona, Marcel, Marcin, Monika, Sylwia, Szymon, Adrian, Kacper, Julia, and Grażyna