Surname Ignaczak (Ignaczak 
) , all over the world, is quite a rare family name. The cognomen Ignaczak is habitual in Poland, where it is quite a rare surname, Romania, where it is a rare surname, and France. In absolute terms, it is commonest in Poland, France, and the United States. More frequently, Ignaczak is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Ignaczak | Germany, Romania, United States, Poland, France |
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krzysztof ignaczak Polish volleyball player, PL (b. 1978) |
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| jerzy ignaczak (b. 1924) |
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| józef ignaczak Polish mathematician, PL (b. 1935) |
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| rainer ignaczak German association football player, DE (b. 1943) |
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| stanisław ignaczak Polish basketball player (1950-2019), PL (b. 1950) |
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| dorota ignaczak Polish scenographer (b. 1953) |
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| grażyna ignaczak-bandych Polish official, teacher, PL (b. 1963) |
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| marcin ignaczak Polish archeologist, PL (b. 1972) |
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| wojciech ignaczak researcher |
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| anna ignaczak researcher, PL |
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| ewa ignaczak Ph.D. Uniwersytet Łódzki 1988 |
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| paweł ignaczak Polish mathematician |
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| patryk ignaczak Polish vocalist, PL (b. 1984) |
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| philippe ignaczak |
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| jerzy ignaczak |
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