Family name Dell'Oro (Dell'Oro 
) , globally, is quite a rare cognomen. The surname Dell'Oro is characteristic of Italy, where it is quite a rare surname, Argentina, where it is a rare surname, and Switzerland. Measured by absolute frequency, this name is the most popular in Italy, Argentina, and Australia. Very seldom, Dell'Oro is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Dell'Oro | Australia, France, Chile, Argentina, Italy |
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arturo dell'oro Italian aviator, CL (b. 1896) |
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adelio dell'oro Italian priest, IT (b. 1948) |
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| vincenzo dell'oro Italian boxer, IT (b. 1899) |
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| emilio dell'oro Italian bobsledder, IT (b. 1900) |
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italo dell'oro IT (b. 1953) |
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| ferdinando dell'oro IT (b. 1924) |
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| erminia dell'oro Italian writer, IT (b. 1938) |
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| paolo dell'oro IT (b. 1935) |
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ítalo h. dell'oro Argentine military personnel, AR |
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| roberto dell'oro (b. 1959) |
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| giorgio dell'oro IT (b. 1965) |
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| stefano dell'oro researcher |
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| mikaela dell'oro researcher (ORCID 0000-0002-1459-1820) |
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| stefania dell'oro researcher |
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| aldo dell'oro researcher, IT |
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Mr, Jake, Jose, John, Juan, Nora, Eros, Enzo, Ezio, Ines, Iris, Ivan, Igor, Olga, Maria, Mario, Marta, Marco, Mauro, Mirko, Mirco, Micol, Luna, Luca, Lisa, Lara, Ms, Max, Ana, Kim, Joy, Tam, Eda, Ivo, Ugo, Sara, Sauro, Aldo, Coty, Raul, Rosa, Rita, Debo, Dean, Dana, Dino, Gian, Gigi, Anna, and Siria