Cognomen Colletto (Colletto 
) , all over the world, is quite a rare family name. The surname Colletto is characteristic of Italy, where it is a rare surname, Argentina, and Brazil, where it is a very rare surname. In absolute terms, this name is the most popular in Italy, the United States, and Brazil. Very seldom, Colletto is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Colletto | Brazil, Argentina, France, United States, Italy |
| giovanni colletto Italian presbyter and writer, IT (b. 1881) |
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jim colletto American football player and coach (b. 1944) |
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| mario colletto Italian politician, IT (b. 1912) |
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| mario colletto (b. 1955) |
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Mr, Rosa, Rose, Remy, Rick, Ruiz, Deni, Dawn, Dina, Dino, Kris, Gary, Lisa, Lori, Lois, Luca, Luis, Luiz, Jack, Jake, Jose, Greg, Kaio, Katy, Bert, Ms, Sam, Sue, Ana, Kim, Pat, Dan, Leo, Joe, Jim, Tim, Mary, Mark, Mike, Myra, Sara, Sean, Anna, Caua, Clea, Ciro, John, and Joan