Family name Antoniak (Antoniak 
, Антоняк 
, Антониак ) , across the world, is quite a common surname. The family name Antoniak is habitual in Poland, where it is quite a rare surname, Ukraine, and Estonia. Not in comparison with a country's population, it is commonest in Poland, Ukraine, and the United States. Likewise, Antoniak is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Antoniak | Brazil, Poland, France, United States, Germany |
| Антоняк | Belarus, Kazakhstan, Russia, Ukraine |
| Антониак | Russia |
| feliks antoniak Polish sportsperson, PL (b. 1888) |
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| józef antoniak Polish officer, PL (b. 1894) |
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józef antoniak Polish association football player, PL (b. 1948) |
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urszula antoniak Polish film director, PL (b. 1968) |
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| jerzy antoniak PL (b. 1919) |
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| andrzej antoniak Polish sportsperson and athletics competitor, PL (b. 1972) |
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| dawn antoniak-mitchell (b. 1966) |
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| derrick t antoniak researcher |
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| anneka elizabeth antoniak researcher |
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| charles e. antoniak Ph.D. University of California, Los Angeles 1969 |
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| silvio antoniak researcher (ORCID 0000-0001-5523-825X) |
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| magda a antoniak researcher |
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| marta antoniak Polish artist, PL (b. 1986) |
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| ulrich antoniak |
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| mateusz antoniak PL (b. 1991) |
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