Cognomen Kaczmarek (Kaczmarek 
, Качмарек 
, Kazmarek 
) , worldwide, is a common surname. The cognomen Kaczmarek is habitual in Poland, where it is quite a common surname, Germany, where it is quite a rare surname, and Ireland. Not in comparison with a country's population, it is commonest in Poland, Germany, and the United States. Likewise, Kaczmarek is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kaczmarek | United Kingdom, United States, France, Poland, Germany |
| Качмарек | Ukraine, Russia, Belarus, Kazakhstan |
| Kazmarek | United States, France, Germany, Canada, Brazil |
| Katzmarek | Argentina, United States, Spain, France, Germany |
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jan stanisław kaczmarek Polish officer (1894-1981), PL (b. 1894) |
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jan kaczmarek Polish politician, PL (b. 1895) |
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ignacy kaczmarek PL (b. 1888) |
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czesław kaczmarek PL (b. 1895) |
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leon kaczmarek Polish linguist, PL (b. 1911) |
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roman kaczmarek PL (b. 1912) |
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julian kaczmarek Polish officer, PL (b. 1923) |
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| marcin kaczmarek PL (b. 1867) |
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franciszek kaczmarek Polish physicist, PL (b. 1928) |
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marian kaczmarek Polish teacher, PL (b. 1934) |
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| jan kaczmarek (b. 1876) |
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| regidius marion clemens kaczmarek botanist (b. 1888) |
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tomasz kaczmarek PL (b. 1936) |
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jerzy kaczmarek Polish fencer, PL (b. 1948) |
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| stanisława kaczmarek Polish Righteous Among the Nations, PL (b. 1899) |
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