Surname Garretto (Garretto 
) , throughout the world, is a rare last name. The surname Garretto is habitual in Italy, where it is a rare surname, Argentina, and Australia, where it is a very rare surname. In absolute terms, it is commonest in Italy, Argentina, and the United States. Very seldom, Garretto is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Garretto | Italy, Australia, United States, Argentina, Brazil |
| paolo garretto Italian painter (1903-1989), IT (b. 1903) |
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| giuseppe garretto (b. 1896) |
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| jean garretto French radio producer, FR (b. 1932) |
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| nélida garretto |
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Ana, Mirta, Sonia, Carla, Paula, David, Diana, Guido, Geoff, Giusy, Laura, Lidia, Luiza, James, Jorge, Joyce, Tania, Nancy, Naeba, Norma, Elisa, Elena, Megan, Emily, Marco, Mario, Joe, Mark, Sean, Aldo, Anna, Paul, Rosa, Rose, Gary, Giss, Luca, John, Joao, Jean, Jeff, Juan, Judy, Enzo, Vito, Yara, Maria, Marta, and Oscar