Family name Caldarelli (Caldarelli 
) , all around the world, is quite a rare last name. The last name Caldarelli is habitual in Italy, where it is quite a rare surname, Luxembourg, and Uruguay, where it is a rare surname. Not in comparison with a country's population, this name is the most popular in Italy, the United States, and Brazil.
| VARIANT | COUNTRY |
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| Caldarelli | Germany, Italy, United States, Argentina, Brazil |
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guido caldarelli Italian physicist (1967-), IT (b. 1967) |
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| secondo caldarelli Luxembourgish association football player, IT (b. 1923) |
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andrea caldarelli Italian racing driver, IT (b. 1990) |
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| gero caldarelli Italian actor (1942-2017), IT (b. 1942) |
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| giorgio caldarelli (b. 1942) |
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| ariel caldarelli Uruguayan actor, UY (b. 1959) |
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| claudio caldarelli researcher |
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| carlos eduardo caldarelli researcher (ORCID 0000-0002-6739-7183) |
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| stefano caldarelli Ph.D. Università di Pisa 1993 |
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| stefano caldarelli researcher |
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| massimo caldarelli researcher (ORCID 0000-0002-2111-3800) |
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| giuliana caldarelli Italian patrologist |
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| leslie caldarelli |
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| ambrosia caldarelli IT |
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