Last name Szczepaniak (Szczepaniak 
) , across the world, is a common family name. The surname Szczepaniak is characteristic of Poland, where it is quite a common surname, France, where it is quite a rare surname, and Ireland. Not in comparison with a country's population, it is the most numerous in Poland, France, and the United States. Likewise, Szczepaniak is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Szczepaniak | Germany, United Kingdom, United States, Poland, France |
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stefan szczepaniak DE (b. 1892) |
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władysław szczepaniak Polish footballer (1910-1979), PL (b. 1910) |
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| czesław szczepaniak Polish politician, PL (b. 1907) |
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| edmund szczepaniak PL (b. 1905) |
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| józef szczepaniak (b. 1909) |
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| roman szczepaniak PL (b. 1911) |
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maciej szczepaniak Polish rally driver, PL (b. 1973) |
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| helena szczepaniak Polish Righteous Among the Nations, PL (b. 1925) |
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| stanisław szczepaniak PL (b. 1919) |
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| walenty szczepaniak Polish chemist, PL (b. 1931) |
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| józef szczepaniak (b. 1922) |
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michał szczepaniak Polish speedway rider, PL (b. 1983) |
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| stanisław szczepaniak Polish biathlete (1934-2015), PL (b. 1934) |
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| roman szczepaniak (b. 1924) |
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| jan szczepaniak Polish politician and deputy (1936-2006), PL (b. 1936) |
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