Surname Troiani (Troiani 
) , across the world, is quite a rare family name. The cognomen Troiani is habitual in Italy, where it is quite a rare surname, Cyprus, and Argentina, where it is a rare surname. Not in comparison with a country's population, it most frequently occurs in Italy, the United States, and Argentina. Much less frequently, Troiani is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Troiani | Italy, France, Brazil, United States, Argentina |
| caterina troiani Italian Roman Catholic nun (1813-1887), IT (b. 1813) |
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| gianbattista troiani Italian sculptor (1844-1927), IT (b. 1844) |
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| gaetano troiani composer, master musician (1873-1942), IT (b. 1873) |
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| cayetano troiani Argentine composer, AR (b. 1873) |
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| jorge troiani Argentinian actor, AR (b. 1901) |
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luigi troiani Italian rugby union player, IT (b. 1964) |
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| oberdan troiani Italian cinematographer, IT (b. 1917) |
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giuseppe troiani Italian politician and mayor, IT |
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virginia troiani Italian female sprinter, IT (b. 1996) |
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| lucio troiani professore di storia romana, IT (b. 1947) |
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| federico troiani Italian singer, IT (b. 1947) |
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| don troiani American artist, US (b. 1949) |
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| francesco troiani researcher (ORCID 0000-0002-4554-1332) |
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| gianluca troiani researcher |
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| diana troiani researcher ORCID ID = 0000-0002-5665-7410 |
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