Surname Ciaccio (Ciaccio 
) , around the world, is quite a rare family name. The last name Ciaccio is habitual in Italy, where it is quite a rare surname, North Macedonia, and the United States, where it is a rare surname. Measured by absolute frequency, this name is the most popular in Italy, the United States, and Argentina. Much less frequently, Ciaccio is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Ciaccio | Italy, United States, Argentina, France, Brazil |
| giacinto ciaccio Italian hagiographer (-1681), IT (b. 1650) |
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| francesco paolo ciaccio Italian soldier (1821-1885), IT (b. 1821) |
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| giuseppe vincenzo ciaccio Italian anatomist (b. 1824) |
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| alessandro ciaccio IT (b. 1818) |
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| giuseppe vincenzo ciaccio (b. 1824) |
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| carmelo ciaccio (b. 1876) |
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| giacinto ciaccio Italian biologist (1909-1974), IT (b. 1909) |
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| leonard l. ciaccio (b. 1924) |
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| giacinto ciaccio Italian director, film critic, journalist and lawyer (1935-1968), IT (b. 1935) |
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| philip ciaccio US (b. 1927) |
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damiano ciaccio Swiss ice hockey player, CH (b. 1989) |
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| roberto ciaccio Italian artist, IT (b. 1951) |
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| marcello ciaccio researcher |
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| chiara ciaccio researcher |
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| erik ciaccio US arachnologist |
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