Last name Piretti (Piretti 
) , around the world, is a rare cognomen. The cognomen Piretti is habitual in Italy, where it is quite a rare surname, Uruguay, where it is a rare surname, and Belgium. In absolute terms, it most frequently occurs in Italy, the United States, and Brazil. Very seldom, Piretti is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Piretti | France, Italy, Brazil, United States, Belgium |
| ferdinando piretti italian mathematician (b. 1601) |
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| enrico piretti IT (b. 1911) |
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| giancarlo piretti Italian designer, IT (b. 1940) |
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| maria serena piretti Italian contemporary historian (1950-), IT (b. 1950) |
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| luca piretti researcher (ORCID 0000-0002-9304-9780) |
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| laura piretti IT |
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Mr, Tony, Toni, Elis, Edna, Erin, Enzo, Ieda, Osni, Maria, Mario, Marco, Monia, Meris, Alice, Aliny, Carlo, Carla, Clara, Bruno, Karen, Kathy, Thor, Katie, Joao, Jane, Ms, Ed, Ana, Ron, Jay, Mary, Mark, Aldo, Anna, Paul, Pino, Pier, Raul, Remo, Reat, Ruth, Dino, Lisa, Luca, Luiz, Lynn, John, and Paula