Last name Ratajczyk (Ratajczyk 
) , around the world, is quite a rare family name. The cognomen Ratajczyk is characteristic of Poland, where it is quite a rare surname, Latvia, where it is a rare surname, and France. Measured by absolute frequency, it most frequently occurs in Poland, the United States, and France. Likewise, Ratajczyk is the forename as well as the last name.
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| Ratajczyk | Brazil, Poland, France, United States, Germany |
| leonard ratajczyk Officer of the Polish Army (b. 1928) |
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| jerzy ratajczyk Polish teacher (1929-2006), PL (b. 1929) |
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| eugeniusz ratajczyk Polish engineer (Warsaw University of Technology), PL (b. 1933) |
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rafał ratajczyk racing cyclist, PL (b. 1983) |
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tomasz ratajczyk |
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| grzegorz ratajczyk (b. 1960) |
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| krzysztof ratajczyk Polish footballer, PL (b. 1973) |
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| lohann ratajczyk Conference interpreter, translator and proof-reader of French, English and Polish, PL (b. 1978) |
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| paulina ratajczyk researcher (ORCID 0000-0002-3437-2852) |
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| władysława ratajczyk Polish Righteous Among the Nations, PL |
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| natalia ratajczyk Polish botanist and ecologist, PL |
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| elicia ratajczyk researcher ORCID ID = 0000-0002-6347-8306 |
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| krzysztof ratajczyk researcher |
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| tomasz ratajczyk Polish chemist and researcher, PL |
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| wiktor ratajczyk Polish Righteous Among the Nations, PL |
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