Family name Kaczkowski (Kaczkowski 
, Качковский 
) , all over the world, is quite a rare surname. The cognomen Kaczkowski is habitual in Poland, where it is quite a rare surname, Belarus, where it is a rare surname, and Lithuania. Measured by absolute frequency, it most frequently occurs in Poland, Russia, and the United States. Likewise, Kaczkowski is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kaczkowski | Canada, Poland, United States, United Kingdom, Germany |
| Качковский | Belarus, Kazakhstan, Russia, Ukraine |
| ksawery kaczkowski (b. 1710) |
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karol kaczkowski physician, PL (b. 1797) |
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| jan chryzostom kaczkowski UA (b. 1744) |
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| dominik kaczkowski BY (b. 1763) |
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zygmunt kaczkowski Polish writer (1825-1896), UA (b. 1825) |
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| stanislaw kaczkowski Polish-Lithuanian historian and poet (1783-1855) (b. 1783) |
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| joachim kaczkowski CZ (b. 1789) |
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| antoni kaczkowski (b. 1805) |
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| teodor kaczkowski PL (b. 1807) |
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| karol kaczkowski lawyer, PL (b. 1822) |
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jan paweł kaczkowski Polish diplomat and translator, PL (b. 1874) |
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franciszek kaczkowski Colonel of the Polish Army, PL (b. 1877) |
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| zygmunt kaczkowski (b. 1831) |
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| edward kaczkowski PL (b. 1838) |
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józef kaczkowski PL (b. 1892) |
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