Family name Fontanari (Fontanari 
) , around the world, is quite a rare surname. The cognomen Fontanari is habitual in Italy, where it is quite a rare surname, Argentina, where it is a rare surname, and Brazil. Much less frequently, Fontanari is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Fontanari | Germany, Italy, Argentina, France, Brazil |
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sergio fontanari Italian politician, IT (b. 1930) |
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| diego fontanari author (1923-2008) (b. 1923) |
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| josé f. fontanari researcher |
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| claudio fontanari Ph.D. Scuola Normale Superiore di Pisa 2002 |
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| gustavo guadagnucci fontanari researcher |
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| anna martha vaitses fontanari researcher (ORCID 0000-0002-1457-3884) |
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| vigilio fontanari researcher |
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| daniele fontanari researcher (ORCID 0000-0002-5304-5670) |
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Mr, Luiz, Luan, Léa, Jane, Jair, Jose, Joao, Joã, Juan, Elio, Enzo, Hugo, Ines, Isis, Irma, Ilse, Ivan, Olga, Omar, Otã, Yael, Luis, Luca, Luci, Lara, Ms, Mã, Ana, Dan, Eva, Isa, Ivo, Ida, Mara, Sara, Maria, Alex, Andy, Anna, Cora, Karl, Raul, Rosa, Rita, Rudi, Ryan, Dora, Aldo, and Mario