Surname Zając (Zajac 
, Zając 
, Zaionc 
) , in the entire world, is a common family name. The last name Zając is characteristic of Poland, where it is quite a common surname, Slovakia, and Jersey. Not in comparison with a country's population, it is the most numerous in Poland, the United States, and Slovakia. Also, Zając is the forename as well as the last name.
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| Zajac | Germany, France, Slovakia, Poland, United States |
| Zając | Germany, France, Poland, United Kingdom, United States |
| Zaionc | Brazil, Poland, United States |
| Zayonc | United Kingdom, United States, Canada |
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józef ludwik zając Polish general, PL (b. 1891) |
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józef zając GB (b. 1902) |
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florian zając PL (b. 1906) |
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marian zając Officer of the Polish Army, PL (b. 1920) |
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edward zając Polish historian, PL (b. 1929) |
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stanisław zając Polish surgeon, PL (b. 1939) |
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jan zając Polish priest, PL (b. 1939) |
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| michał zając officer (1895-1958), UA (b. 1895) |
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józef zając Polish mathematician, PL (b. 1947) |
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stanisław zając Polish politician (1949-2010), PL (b. 1949) |
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ryszard zając Polish artist, born 1951, PL (b. 1951) |
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alicja zając Polish politician, PL (b. 1953) |
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| ewa zając Polish Righteous Among the Nations, PL (b. 1905) |
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| stefan zając PL (b. 1895) |
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| józefa zając Polish Righteous Among the Nations, PL (b. 1912) |
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Ala, Jola, Jula, Nina, Eryk, Emil, Irek, Igor, Izka, Olaa, Olga, Olek, Wera, Zuza, Maria, Marta, Marek, Magda, Majka, Monia, Mirek, Sonia, Lech, Lena, Gabi, Kuba, Ada, Aga, Lea, Jan, Ela, Ewa, Ina, Iga, Iza, Ola, Alina, Ula, Maja, Sara, Alan, Anna, Ania, Anka, Arek, Adam, Asia, Kaja, Maks, and Antek