Cognomen Nowaczek (Nowaczek 
) , around the world, is quite a rare last name. The surname Nowaczek is habitual in Poland, where it is quite a rare surname, Slovakia, where it is a rare surname, and New Zealand. Measured by absolute frequency, the name is most common in Poland, Germany, and the United States. Also, Nowaczek is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Nowaczek | Canada, Slovakia, United States, Germany, Poland |
| stefan nowaczek Polish officer, PL (b. 1896) |
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| stefan nowaczek PL (b. 1919) |
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| anna nowaczek researcher ORCID ID = 0000-0002-8725-2803 |
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| mateusz nowaczek Polish cyclist, PL (b. 1991) |
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