Family name Clausi (Clausi 
) , all around the world, is quite a rare cognomen. The surname Clausi is habitual in Italy, where it is quite a rare surname, Luxembourg, and Argentina, where it is a rare surname. In absolute terms, it is the most numerous in Italy, Argentina, and the United States. Very seldom, Clausi is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Clausi | Italy, Brazil, Spain, United States, Argentina |
| bernardo maria clausi (b. 1789) |
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arnaldo clausi schettini Italian physician and politician (1905-1963), IT (b. 1905) |
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| pascual clausi AR (b. 1893) |
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| gabriel clausi Argentinian musician (1911-2010), AR (b. 1911) |
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| benedetto clausi (b. 1953) |
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| silvia clausi researcher (ORCID 0000-0001-8721-1799) |
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| alicia clausi Pianist, Composer, Symphony Orchestra Conductor, Choir Director, Superior Professor of Music and Arts, Superior Technique in Music. Born in the city of Buenos Aires, Argentina. |
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| mirella clausi Italian entomologist, IT |
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| mariano guardia clausi researcher |
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| milan clausi American artistic gymnast, US |
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Mr, Rosi, Rino, Gary, Gina, Luca, Luis, Léa, Jair, Jose, John, Jeff, Juan, Nina, Elio, Erin, Emma, Hugo, Vale, Flor, Ines, Iris, Ross, Irma, Rosa, Pino, Ms, Max, Sam, Ana, Amy, Ben, Pat, Joe, Jim, Tom, Mary, Mark, Mike, Sara, Alan, Aldo, Anna, Aida, Cruz, Paul, Pina, Rafa, and Zeni