Cognomen Baiardo (Baiardo 
) , in the world, is a rare family name. The last name Baiardo is characteristic of Italy, where it is a rare surname, Belgium, and Argentina, where it is a very rare surname. Not in comparison with a country's population, it is commonest in Italy, Brazil, and the United States. Very seldom, Baiardo is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Baiardo | Italy, Brazil, Belgium, United States, Argentina |
| giovanni battista baiardo Italian painter (1620-1657), IT (b. 1620) |
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| davide baiardo Italian swimmer, IT (b. 1887) |
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bruno baiardo Italian footballer, IT (b. 1945) |
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| rosanna baiardo IT (b. 1962) |
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Mr, Vera, Maria, Mario, Marco, Mauro, Megan, Sonia, Alice, Alana, Egle, Angel, Carlo, Corey, Celso, Bruno, Bruna, Kitty, Paula, Paulo, Pablo, Adele, Paola, Enzo, Elsa, Ms, Sam, Dan, Joe, Tim, Mary, Mike, Sara, Aldo, Eros, Gaia, Luca, Luis, Luiz, Luan, Jose, Joao, Juan, Nadi, Nick, Lara, and Paolo