Last name Gastaldon (Gastaldon 
) , globally, is a rare family name. The cognomen Gastaldon is habitual in Italy, where it is a rare surname, Brazil, where it is a very rare surname, and Belgium. Not in comparison with a country's population, it is commonest in Italy, Brazil, and France. Much less frequently, Gastaldon is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Gastaldon | Australia, Argentina, Brazil, France, Italy |
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stanislao gastaldon Italian composer, IT (b. 1861) |
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| vidya gastaldon French artist, FR (b. 1974) |
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| fiorella gastaldon researcher |
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| chiara gastaldon researcher |
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| simone gastaldon researcher ORCID ID = 0000-0002-0818-2131 |
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Mr, Maria, Mario, Marta, Marco, Mauro, Moira, Mirco, Sarah, Selma, Sonia, Anita, Arina, Carlo, Corey, Celio, Bruno, Paulo, Pablo, Pedro, Ravik, Renan, Yuri, Irma, Hugo, Ezio, Ms, Ana, Leo, Mark, Sara, Aldo, Adir, Davi, Lara, Lari, Renzo, Lais, Luca, Luis, Jose, John, Joao, Jean, Tata, Nair, Edio, Eros, Lise, and Dario