Last name Waszak (Waszak 
) , worldwide, is quite a rare cognomen. The last name Waszak is characteristic of Poland, where it is quite a rare surname, France, where it is a rare surname, and the United States. Measured by absolute frequency, the name is most common in Poland, the United States, and Brazil. Also, Waszak is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Waszak | Poland, Brazil, France, Germany, United States |
| stanisław waszak Polish statistician and demographer, PL (b. 1906) |
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| aleksander waszak Polish mathematician (b. 1936) |
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| krystyna waszakowa Polish linguist, PL (b. 1950) |
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| reine-marie waszak French politician, FR (b. 1951) |
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| małgorzata waszak PL (b. 1957) |
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| sebastian m waszak researcher |
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| ilona waszak researcher, PL |
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| małgorzata waszak researcher |
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| christian waszak |
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