Family name Janiszewska (Janiszewska 
) , throughout the world, is quite a rare surname. The last name Janiszewska is characteristic of Poland, where it is quite a rare surname, Ireland, where it is a rare surname, and Norway. Measured by absolute frequency, it most frequently occurs in Poland, the United Kingdom, and Germany. More prevalently, Janiszewska is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Janiszewska | United Kingdom, Poland, United States, Ireland, Germany |
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julia janiszewska PL (b. 1820) |
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| aleksandra janiszewska PL (b. 1837) |
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barbara janiszewska Polish sprinter, PL (b. 1936) |
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| halina janiszewska Polish activist, PL (b. 1909) |
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| janina janiszewska PL (b. 1899) |
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| irena janiszewska PL (b. 1914) |
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| barbara janiszewska-mincer Polish historian, PL (b. 1930) |
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| jadwiga janiszewska PL (b. 1933) |
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| beata janiszewska Polish judge, academic, PL (b. 1969) |
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| michalina janiszewska researcher (ORCID 0000-0002-8592-5146) |
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| marta janiszewska Polish researcher, PL |
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| katarzyna janiszewska researcher (ORCID 0000-0002-4471-7543) |
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| joanna janiszewska researcher ORCID ID = 0000-0002-1765-0152 |
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| dorota janiszewska Polish researcher, PL |
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| jolanta janiszewska researcher, PL |
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