Surname Kijak (Kijak 
, Кияк 
) , worldwide, is quite a rare last name. The cognomen Kijak is habitual in Poland, where it is quite a rare surname, Albania, where it is a rare surname, and Ukraine. Not in comparison with a country's population, the name is most common in Poland, the United States, and Ukraine. Also, Kijak is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Kijak | United Kingdom, Poland, France, Germany, United States |
| Кияк | Ukraine, Kazakhstan, Russia |
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stefan kijak Polish soldier, PL (b. 1893) |
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| stanisław kijak Officer of the Polish Army, IT (b. 1898) |
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ryszard józef kijak Polish physician, journalist, PL (b. 1950) |
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| katarzyna kijak Polish Righteous Among the Nations, PL (b. 1902) |
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| stanisław kijak (b. 1901) |
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stephen kijak American filmmaker, US (b. 1969) |
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| ryszard kijak PL (b. 1929) |
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| zenon kijak PL (b. 1930) |
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| jarosław kijak Polish physicist, PL (b. 1965) |
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| felicja kijak Polish Righteous Among the Nations, PL |
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| edward kijak researcher |
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| gustavo h kijak researcher |
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| remigiusz j kijak researcher |
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| anna kijak (b. 1977) |
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| wilhelm kijak |
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