Cognomen Degennaro (Degennaro 
) , throughout the world, is quite a rare family name. The cognomen Degennaro is habitual in Italy, where it is a rare surname, the United States, and Switzerland. Measured by absolute frequency, it is commonest in the United States, Italy, and Canada.
| VARIANT | COUNTRY |
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| Degennaro | Canada, Italy, France, United States, Argentina |
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giuseppe degennaro Italian politician, IT (b. 1940) |
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grace degennaro American artist, US (b. 1956) |
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| carmine degennaro Italian politician, IT (b. 1959) |
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| matt degennaro American football player (b. 1969) |
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| matthew degennaro American scientist and mosquito researcher, US (b. 1975) |
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| vinny degennaro American boxer, US (b. 1976) |
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| don degennaro college basketball player (1988–1988) Manhattan |
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| ellen m degennaro researcher |
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| anthony degennaro Ph.D. Princeton University 2016 |
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| vincent degennaro researcher (ORCID 0000-0002-5992-1731) |
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| regina degennaro researcher |
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| john degennaro college basketball player (1987–1990) Manhattan |
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| richard degennaro librarian |
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| leonardo degennaro researcher |
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