Surname Karwacki (Karwacki 
) , throughout the world, is quite a rare last name. The last name Karwacki is characteristic of Poland, where it is quite a rare surname, Australia, where it is a rare surname, and Canada. Not in comparison with a country's population, the name is most common in Poland, the United States, and Germany. Also, Karwacki is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Karwacki | Germany, Australia, United States, Poland, Canada |
| maciej karwacki PL (b. 1686) |
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| ludwik franciszek karwacki PL (b. 1698) |
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| tomasz karwacki PL (b. 1708) |
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alojzy karwacki UA (b. 1866) |
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| aleksander karwacki (b. 1825) |
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zygmunt karwacki PL (b. 1893) |
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| leon karwacki Polish microbiologist (1871-1942), PL (b. 1871) |
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| jerzy karwacki (b. 1922) |
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| andrzej karwacki Polish geologist, PL (b. 1945) |
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| roman karwacki Polish Catholic clergyman, PL (b. 1945) |
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| janusz karwacki PL (b. 1940) |
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| david karwacki Canadian politician, CA (b. 1965) |
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| marek karwacki researcher, PL |
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| aleksander karwacki [occupation:Demokrat] [dates:1847] [archive:Polskie Archiwum Biograficzne] |
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| léon karwacki botanist |
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