Cognomen Mielczarek (Mielczarek 
) , around the world, is quite a common last name. The family name Mielczarek is habitual in Poland, where it is quite a common surname, Ireland, where it is a rare surname, and France. In absolute terms, it most frequently occurs in Poland, Germany, and France. More frequently, Mielczarek is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Mielczarek | United Kingdom, Poland, United States, France, Germany |
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mariusz mielczarek Polish musician, PL (b. 1965) |
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| stefan mielczarek Polish sportsperson and athletics competitor, PL (b. 1917) |
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| klemens mielczarek actor (1920-2006), PL (b. 1920) |
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marcin mielczarek PL (b. 1975) |
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| janusz mielczarek Polish photographer, PL (b. 1936) |
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| maria mielczarek PL (b. 1934) |
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beata mielczarek PL (b. 1991) |
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| zygmunt mielczarek (b. 1944) |
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| zygmunt mielczarek (b. 1944) |
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| andrzej mielczarek Polish speedway rider, PL (b. 1955) |
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| elżbieta mielczarek Polish singer, PL (b. 1958) |
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| tomasz mielczarek Polish historian, PL (b. 1960) |
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| grzegorz mielczarek Polish actor, PL (b. 1977) |
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| rozalia mielczarek Polish Righteous Among the Nations, PL |
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| milena mielczarek researcher |
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