Family name Casaretto (Casaretto 
) , globally, is quite a rare last name. The family name Casaretto is characteristic of Latin America and the Caribbean, particularly Uruguay, where it is quite a rare surname, Peru, and Argentina. Measured by absolute frequency, it is commonest in Argentina, Peru, and Italy. Very seldom, Casaretto is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Casaretto | Peru, Germany, Argentina, Italy, Uruguay |
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pietro francesco casaretto Italian priest, IT (b. 1810) |
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michele casaretto Italian politician, IT (b. 1820) |
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| giovanni casaretto Italian botanist and explorer (1810-1879), IT (b. 1810) |
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| pier francesco casaretto IT (b. 1860) |
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| francesco casaretto Italian politician, IT (b. 1871) |
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alcides jorge pedro casaretto Argentinian priest, AR (b. 1936) |
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marcelo casaretto Argentine politician, AR (b. 1967) |
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federico casaretto UY (b. 1968) |
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| francesco mosetti casaretto (b. 1964) |
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| caroline casaretto field hockey player, DE (b. 1978) |
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| edilma silva casaretto researcher |
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| gaetano casaretto composer |
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| esteban casaretto researcher |
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| emily casaretto marine mammalogist |
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| christopher casaretto Chilean association football player, CL (b. 1987) |
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Mr, Gian, Gina, Gino, Gime, Leon, Lucy, Luis, Luli, Jose, Gary, John, Jeff, Juan, Tito, Noel, Elsa, Elba, Euge, Hugo, Ines, Jero, Dora, Rick, Rosa, Ms, Mel, Ale, Ali, Ana, Lia, Jan, Nat, Oli, Marc, Mark, Majo, Sara, Segu, Alex, Alan, Alma, Aldo, Anna, Atir, Raul, Iris, and Olga