Cognomen D'Emilia (D'Emilia 
) , throughout the world, is a rare family name. The family name D'Emilia is characteristic of Italy, where it is a rare surname, Chile, where it is a very rare surname, and France, where it is an extremely rare surname. Not in comparison with a country's population, the name is most common in Italy, the United States, and Chile. Likewise, D'Emilia is the forename as well as the last name.
| VARIANT | COUNTRY |
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| D'Emilia | France, Italy, Chile, United States, Democratic Republic of the Congo |
| antonio d'emilia Italian academician, IT (b. 1908) |
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angelo d'emilia politician in Massachusetts, US, US |
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| pio d'emilia Italian journalist, IT (b. 1954) |
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| giulio d'emilia researcher (ORCID 0000-0002-9285-3355) |
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