Cognomen Nowacki (Nowacki 
) , in all the world, is a common family name. The family name Nowacki is characteristic of Poland, where it is quite a common surname, Luxembourg, where it is quite a rare surname, and Germany. Measured by absolute frequency, this name is the most popular in Poland, the United States, and Germany. Likewise, Nowacki is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Nowacki | United Kingdom, Poland, France, Germany, United States |
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anton nowacki Swiss university teacher (1839-1925), CH (b. 1839) |
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| tomasz nowacki PL (b. 1802) |
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jan nowacki UA (b. 1872) |
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| teofil nowacki PL (b. 1830) |
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henryk roman nowacki PL (b. 1891) |
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| władysław ignacy nowacki-kopaczyński PL (b. 1843) |
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paweł nowacki engineer (1905-1979), PL (b. 1905) |
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alfred nowacki PL (b. 1896) |
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bernard nowacki Polish opera singer (1908-1995), PL (b. 1908) |
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kazimierz nowacki Polish art historian, PL (b. 1928) |
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| ignacy nowacki PL (b. 1872) |
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| jerzy nowacki Polish politician (1894-1974), PL (b. 1894) |
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henryk józef nowacki German priest, DE (b. 1946) |
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| janusz nowacki (b. 1889) |
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| józef nowacki PL (b. 1893) |
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