Last name Ciaccia (Ciaccia 
) , in all the world, is quite a rare cognomen. The surname Ciaccia is characteristic of Italy, where it is quite a rare surname, Argentina, where it is a rare surname, and Austria. Not in comparison with a country's population, it is the most numerous in Italy, the United States, and Argentina. Very seldom, Ciaccia is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Ciaccia | Canada, Argentina, Italy, Venezuela, United States |
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john ciaccia Canadian politician (1933-2018), CA (b. 1933) |
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mario ciaccia Italian politician, magistrate and writer, IT (b. 1947) |
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| francesco di ciaccia Italian philosopher, essayist and writer (1942-), IT (b. 1942) |
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| antonio di ciaccia author (1944-) (b. 1944) |
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| dora ciaccia Italian basketball player, IT (b. 1957) |
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| frank ciaccia Canadian soccer player, CA (b. 1959) |
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| adalberto ciaccia researcher |
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| loredana ciaccia researcher (ORCID 0000-0002-1307-9083) |
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| corrado ciaccia researcher (ORCID 0000-0002-1671-9349) |
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| francesco ciaccia researcher |
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