Cognomen Baiardi (Baiardi 
) , across the world, is quite a rare family name. The last name Baiardi is habitual in Italy, where it is quite a rare surname, Argentina, where it is a rare surname, and Switzerland. In absolute terms, it is commonest in Italy, Argentina, and the United States. Much less frequently, Baiardi is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Baiardi | Argentina, Brazil, Italy, United States, Switzerland |
| giovanni battista baiardi author (1530-1600) (b. 1530) |
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| ottavio antonio baiardi Italian writer, IT (b. 1694) |
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| deodato baiardi Roman Catholic bishop (b. 1700) |
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ennio baiardi Italian politician and mayor, IT (b. 1928) |
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| carlo baiardi Italian musician, IT (b. 1915) |
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| mario baiardi IT (b. 1909) |
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| diego baiardi Italian pianist, IT (b. 1964) |
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| ana maría baiardi Diplomat and Paraguayan politician, PY (b. 1965) |
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| michael baiardi composer, US (b. 1972) |
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| simone baiardi researcher |
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| fabrizio baiardi Italian computer scientist, IT |
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| gustavo baiardi researcher |
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| lorenzo cerboni baiardi researcher |
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| paola baiardi researcher (ORCID 0000-0002-1622-8400) |
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| andrea baiardi IT |
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Mr, Raul, Rosa, Rose, Rosi, Rich, Rino, Ruth, Ryan, Dean, Dana, Dawn, Dino, Dora, Gian, Gina, Lara, Ladi, Lele, Lida, Luca, Luis, Pier, Ciro, Cora, Aida, Ms, Ia, Max, Sol, Ana, Ada, Bev, Kat, Rui, Joe, Luiz, Tim, Ida, Ugo, Mica, Mike, Sara, Alex, Alan, Aldo, Anna, Adam, Eva, and Jose