Surname Bartkowiak (Bartkowiak 
, Бартковяк 
) , in the entire world, is quite a common cognomen. The family name Bartkowiak is characteristic of Poland, where it is quite a common surname, Germany, where it is quite a rare surname, and Ireland, where it is a rare surname. Not in comparison with a country's population, it is commonest in Poland, Germany, and the United States. Also, Bartkowiak is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Bartkowiak | Germany, France, United States, United Kingdom, Poland |
| Бартковяк | Ukraine |
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antoni bartkowiak PL (b. 1897) |
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władysław bartkowiak PL (b. 1900) |
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andrzej bartkowiak Polish film director, PL (b. 1950) |
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| władysława bartkowiak Polish Righteous Among the Nations, PL (b. 1903) |
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| franciszek bartkowiak PL (b. 1894) |
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| hans bartkowiak German officer and Knight's Cross recipient, DE (b. 1917) |
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andrzej bartkowiak Polish firefighter, PL (b. 1972) |
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| tadeusz bartkowiak Polish actor, PL (b. 1933) |
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| zbigniew bartkowiak PL (b. 1924) |
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| zenon bartkowiak PL (b. 1929) |
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ryszard bartkowiak PL |
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| anna bartkowiak (b. 1930) |
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sylwia bartkowiak Polish kinesiologist and handball referee and beach handball player, PL (b. 1991) |
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| h stefan bartkowiak (b. 1939) |
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| heinz stefan bartkowiak DE (b. 1939) |
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