Cognomen Biordi (Biordi 
) , globally, is a rare last name. The last name Biordi is characteristic of San Marino, where it is a common surname, Italy, where it is a rare surname, and Belgium. Not in comparison with a country's population, this name is the most popular in Italy, the United States, and San Marino. Much less frequently, Biordi is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Biordi | France, San Marino, Italy, United States, Belgium |
| giovanni biordi IT (b. 1691) |
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| francesco maria biordi Roman Catholic bishop (b. 1764) |
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| raffaello biordi Italian journalist, writer, literary and art critic (1896-1993), IT (b. 1896) |
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| ubaldo biordi Sammarinese politician, SM (b. 1938) |
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| paolo biordi IT (b. 1959) |
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| assunta leda biordi researcher |
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| agostino biordi SM |
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| juri biordi Sammarinese footballer, SM (b. 1995) |
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| igor biordi basketball player (1996-), SM (b. 1996) |
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Ma, Léo, Jane, John, Joan, Jean, Toni, Noé, Eric, Emma, Luca, Ines, Mario, Marco, Mauro, Sante, Sally, Susan, Sonia, Steve, Scila, Maria, Lisa, Gina, Gail, Mr, Ms, Sam, Ana, Ann, Cal, Ben, Gay, Leo, Liz, Ugo, Mary, Sara, Alex, Aldo, Anna, Anne, Kyle, Rick, Dina, Dino, Carlo, and Cathy