Last name Kaniak (Kaniak 
, Каниак) , all over the world, is a rare surname. The last name Kaniak is characteristic of Austria, where it is quite a rare surname, Slovakia, where it is a rare surname, and Poland. Not in comparison with a country's population, it is the most numerous in Poland, Austria, and Brazil. Likewise, Kaniak is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Kaniak | Brazil, Czechia, Poland, Austria, Slovakia |
| heinrich kaniak CZ (b. 1855) |
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| karl kaniak Austrian author, AT (b. 1872) |
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| józef kaniak UA (b. 1883) |
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| gustav kaniak Austrian supreme court judge, AT (b. 1907) |
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gerhard kaniak Austrian politician, AT (b. 1979) |
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| józef kaniak (b. 1939) |
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| aleksandra kaniak US (b. 1967) |
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| g kaniak researcher |
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