Family name Nassy (Nassy 
) , all over the world, is a rare surname. The cognomen Nassy is characteristic of Curacao, where it is quite a common surname, Netherlands, where it is a rare surname, and the Democratic Republic of the Congo. Not in comparison with a country's population, it is the most numerous in the Democratic Republic of the Congo, Netherlands, and Algeria. Likewise, Nassy is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Nassy | Democratic Republic of the Congo, United States, Nigeria, Algeria, Netherlands |
| david cohen nassy Jewish explorer, NL (b. 1612) |
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| david nassy NL (b. 1747) |
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johan frederik nassy SR (b. 1866) |
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| jacques bernard nassy Dutch politician, NL (b. 1861) |
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| maurice nassy NL (b. 1858) |
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| josef nassy American-Suriname electrical engineer, visual artist and holocaust survivor (1904-1976), US (b. 1904) |
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| samuel cohen nassy Jewish settler |
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