Last name Janowsky (Janowsky 
) , worldwide, is a rare cognomen. The cognomen Janowsky is habitual in Germany, where it is a rare surname, France, where it is a very rare surname, and the United States.
| VARIANT | COUNTRY |
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| Janowsky | Canada, Brazil, France, United States, Germany |
| karl janowsky German politician (1903-1974), DE (b. 1903) |
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| oscar i. janowsky (b. 1900) |
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| julius janowsky Austrian diver (b. 1930) |
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| david steffan janowsky (b. 1939) |
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| uschi janowsky (b. 1948) |
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| steven alan janowsky Ph.D. Harvard University 1990 |
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| william janowsky |
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| viktor janowsky |
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| peggy janowsky |
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