Cognomen Zadora (Zadora 
, Задора 
) , across the world, is quite a rare surname. The cognomen Zadora is habitual in Eastern Europe, particularly Belarus, where it is quite a rare surname, Poland, and Slovakia, where it is a rare surname. Not in comparison with a country's population, this name is the most popular in Poland, Belarus, and the United States. Likewise, Zadora is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Zadora | Tanzania, Poland, United States, Slovakia, Belgium |
| Задора | Belarus, Ukraine, Russia, Kazakhstan |
| marcjan russocki h. zadora (b. 1693) |
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| michael zadora American pianist and composer (1882-1946), US (b. 1882) |
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pia zadora American actress and singer, US (b. 1954) |
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| stanisław zadora Polish politician, PL (b. 1949) |
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| krzysztof zadora Polish economist, PL (b. 1950) |
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| elisabeth zadora-rio (b. 1945) |
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| grzegorz zadora researcher |
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| zofia lanckoronski z brzezia h. zadora Abt 1465 - Abt 1515 |
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| piotr k zadora researcher (ORCID 0000-0001-9040-1227) |
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| anna zadora |
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| anna zadora |
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