Family name Ciardi (Ciardi 
) , all around the world, is quite a rare last name. The family name Ciardi is habitual in Italy, where it is quite a rare surname, Serbia, where it is a rare surname, and Hong Kong. In absolute terms, it is commonest in Italy, the United States, and Brazil. Very seldom, Ciardi is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Ciardi | Argentina, Brazil, France, Italy, United States |
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attilio ciardi musician, composer, conductor and choir, IT (b. 1834) |
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guglielmo ciardi Italian painter (1842-1917), IT (b. 1842) |
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| giovanni ciardi Italian engineer and politician, IT (b. 1815) |
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| carlo ciardi (b. 1818) |
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emma ciardi Italian painter (1879-1933), IT (b. 1879) |
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livio ciardi Italian trade unionist and politician (1881–1943), IT (b. 1881) |
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| beppe ciardi Italian painter (1875-1932), IT (b. 1875) |
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| john ciardi American poet, professor, translator, US (b. 1916) |
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david ciardi American astronomer, US (b. 1969) |
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| giotto ciardi Italian carabinier (1921-1995), IT (b. 1921) |
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| maria grazia ciardi dupré Italian art historian, IT (b. 1933) |
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| franco ciardi Italian footballer (1940-2015), IT (b. 1940) |
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| roberto ciardi IT (b. 1938) |
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| francesca ciardi Italian actress, IT (b. 1954) |
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| fabio ciardi (b. 1948) |
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