Cognomen Ghelfi (Ghelfi 
) , in the world, is quite a rare family name. The last name Ghelfi is characteristic of Italy, where it is quite a rare surname, Uruguay, and Switzerland. Measured by absolute frequency, it is commonest in Italy, Argentina, and France. Much less frequently, Ghelfi is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Ghelfi | France, Argentina, Italy, Brazil, United States |
| joão ghelfi Brazilian artist (1890-1925), BR (b. 1890) |
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| andré ghelfi CH (b. 1921) |
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| elio ghelfi Italian boxing trainer (1937-2020), IT (b. 1937) |
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| antonio ghelfi Italian association football player (1940-2016), IT (b. 1940) |
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| tony ghelfi American baseball player, US (b. 1961) |
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| italino ghelfi sentenced to death during the World War II |
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| albertina ghelfi researcher ORCID ID = 0000-0003-1565-9791 |
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| elisa ghelfi research scientist at Harvard |
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| orietta ghelfi author of Biblioteche oggi |
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| morena ghelfi researcher |
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| franco ghelfi researcher ORCID ID = 0000-0001-7759-7077 |
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| alexandre ghelfi |
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| francesca ghelfi IT (b. 1996) |
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