Cognomen Kroczak (Kroczak 
) , in the entire world, is a rare surname. The family name Kroczak is characteristic of Poland, where it is quite a rare surname, Australia, where it is a very rare surname, and Italy. Not in comparison with a country's population, the name is most common in Poland, the United States, and Italy. More prevalently, Kroczak is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kroczak | Germany, United Kingdom, Poland, United States, Italy |
| ferdinand kroczak CZ (b. 1851) |
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| aleksandra kroczak researcher |
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| justyna kroczak Polish philosophy historian and philosophical literature translator, PL (b. 1986) |
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| michał kroczak Polish basketball player, PL |
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