Last name Zelazo (Zelazo 
) , across the world, is a rare cognomen. The family name Zelazo is habitual in Poland, where it is a rare surname, New Zealand, where it is a very rare surname, and Australia. Not in comparison with a country's population, it most frequently occurs in Poland, the United States, and Germany. More prevalently, Zelazo is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Zelazo | Germany, United States, Poland, Canada, Brazil |
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edward s. zelazo American politician in Massachusetts (1924-2008), US (b. 1924) |
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| philip david zelazo American psychologist, US (b. 1966) |
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| dan zelazo Ph.D. University of Washington 2009 |
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| daniel zelazo researcher |
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