Cognomen Frątczak (Frątczak 
) , all over the world, is quite a rare surname. The cognomen Frątczak is characteristic of Poland, where it is quite a rare surname, Norway, where it is a very rare surname, and Germany, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Frątczak | Germany, Poland, Norway, United Kingdom |
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wojciech frątczak PL (b. 1949) |
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paweł frątczak PL (b. 1960) |
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| kazimierz frątczak PL (b. 1933) |
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bartosz frątczak PL (b. 1987) |
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| kamila frątczak Polish sportsperson, PL (b. 1979) |
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| agata frątczak Polish researcher, PL |
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| katarzyna frątczak researcher (ORCID 0000-0002-1322-9977) |
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| andrzej frątczak victim of far-right hate crime in Germany killed in 1990, DE |
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| radosław frątczak Polish cyclist, PL |
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Jan, Rafał, Roman, Daria, Dawid, Gosia, Laura, Lidia, Jacek, Jarek, Jakub, Julia, Tomek, Filip, Irena, Ilona, Iwona, Zofia, Marcel, Marcin, Maciej, Maciek, Piotr, Paweł, Paula, Kasia, Ewa, Ola, Maja, Anna, Ania, Adam, Asia, Igor, Olga, Maria, Monika, Marta, Magda, Mirek, Antek, Aneta, Ariel, Artur, Agata, Beata, Karol, Kamil, Marek, and Milena