Cognomen Ricciardi (Ricciardi 
) , across the world, is a common surname. The family name Ricciardi is habitual in Monaco, where it is quite a common surname, Italy, and Paraguay. Not in comparison with a country's population, it is the most numerous in Italy, the United States, and Argentina. Very seldom, Ricciardi is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Ricciardi | Paraguay, Argentina, Italy, Brazil, United States |
| francesco ricciardi IT (b. 1474) |
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| giovanni ricciardi Italian friar, theologist and writer, IT (b. 1599) |
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| stefano ricciardi Roman Catholic bishop (b. 1621) |
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| giovan battista ricciardi Italian philosopher and poet (1623-1686), IT (b. 1623) |
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| michele ricciardi Italian painter (1672-1753), IT (b. 1672) |
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| antonio ricciardi Italian poet, IT (b. 1700) |
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giuseppe napoleone ricciardi Italian politician (1808-1882), IT (b. 1808) |
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| francesco ricciardi Italian politician (1758-1842), IT (b. 1758) |
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mariano ricciardi IT (b. 1814) |
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william ricciardi Italian actor, IT (b. 1871) |
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| roberto ricciardi Italian politician, IT (b. 1822) |
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| giuseppe ricciardi IT (b. 1839) |
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mario ricciardi Italian politician (1908-1952), IT (b. 1908) |
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| oscar ricciardi Italian painter (1864-1935), IT (b. 1864) |
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| vincenzo ricciardi composer (b. 1873) |
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