Surname Smoczyk (Smoczyk 
) , in the world, is a rare cognomen. The family name Smoczyk is characteristic of Poland, where it is quite a rare surname, France, where it is a very rare surname, and Germany. In absolute terms, this name is the most popular in Poland, the United States, and France. Likewise, Smoczyk is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Smoczyk | Germany, France, Poland, United Kingdom, United States |
| alfred smoczyk Polish speedway rider (1928-1950), PL (b. 1928) |
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| wacław smoczyk PL (b. 1919) |
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| zdzisław smoczyk Polish speedway rider, PL (b. 1929) |
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| krzysztof smoczyk (b. 1955) |
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| michał smoczyk researcher |
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| gregory m smoczyk researcher (ORCID 0000-0002-6591-4060) |
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| knut smoczyk Dr. rer. nat. Ruhr-Universität Bochum 1994 |
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| gregory m. smoczyk |
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