Cognomen Filek (Filek 
) , around the globe, is quite a rare surname. The last name Filek is habitual in Slovakia, where it is quite a rare surname, Poland, and Croatia, where it is a rare surname. Measured by absolute frequency, it most frequently occurs in Poland, the United States, and Slovakia. Likewise, Filek is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Filek | Slovakia, Canada, United States, Czechia, Poland |
| jiljí augustin filek CZ (b. 1771) |
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| egid filek Austrian writer (1874-1949), AT (b. 1874) |
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| albert von filek AT (b. 1889) |
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| michał filek Polish association football player (1916-2003), PL (b. 1916) |
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| erazm józef filek PL (b. 1907) |
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| anna filek Polish politician and deputy, PL (b. 1933) |
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| werner filek AT (b. 1934) |
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| janina filek Polish ethicist, professor, PL (b. 1954) |
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| tadeusz jacek filek PL (b. 1945) |
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| severin filek Austrian university teacher, AT (b. 1961) |
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| christian filek (b. 1966) |
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| maria filek researcher ORCID ID = 0000-0001-7259-8353, PL |
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| urszula filek researcher |
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| anna filek |
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