Family name Diamantini (Diamantini 
) , in all the world, is a rare last name. The family name Diamantini is characteristic of Italy, where it is quite a rare surname, Greece, where it is a rare surname, and Switzerland, where it is a very rare surname. In absolute terms, this name is the most popular in Italy, the United States, and Greece. Much less frequently, Diamantini is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Diamantini | Greece, Canada, France, United States, Italy |
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giuseppe diamantini Italian painter and engraver (1621-1705), IT (b. 1621) |
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| fiorella diamantini Italian painter, IT (b. 1931) |
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enrico diamantini Italian volleyball player, IT (b. 1993) |
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| chiara diamantini Italian artist, IT (b. 1949) |
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| giuseppe diamantini researcher ORCID ID = 0000-0002-1304-4796 |
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| umberto diamantini Italian association football player, IT |
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| claudia diamantini researcher |
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Mr, Paolo, Dario, David, Donna, Laura, Lucia, Luigi, Luana, Noemi, Elisa, Elise, Ester, Helga, Heidi, Fabio, Furio, Matteo, Monica, Melisa, Sandro, Sabina, Paola, Silvia, Pablo, Carlo, Joy, Mark, Sara, Alex, Anna, Abby, Rino, Rita, Luca, Jose, John, Toni, Tina, Enzo, Maria, Mario, Marco, Mauro, Stacy, Alice, Adamo, Brian, and Simone