Surname Gianotti (Gianotti 
) , throughout the world, is quite a common cognomen. The cognomen Gianotti is habitual in San Marino, where it is quite a common surname, Djibouti, and Italy, where it is quite a rare surname. In absolute terms, it is the most numerous in Italy, Argentina, and Brazil. Very seldom, Gianotti is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Gianotti | Italy, United States, Argentina, France, Brazil |
| alfonso gianotti (b. 1596) |
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| giovanni antonio gianotti Roman Catholic archbishop (b. 1784) |
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constance gianotti American-born Italian countess (b. 1845) |
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| marcello gianotti Italian politician, IT (b. 1799) |
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| giovanni battista gianotti Italian artist and designer (1873-1928), IT (b. 1873) |
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| francesco gianotti Italian architect, AR (b. 1881) |
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| ambrogio gianotti Italian presbyter, IT (b. 1901) |
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fabiola gianotti Italian particle physicist and CERN Director-General, IT (b. 1960) |
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daniele gianotti IT (b. 1957) |
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| enrique fernández gianotti AR (b. 1911) |
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| ferdinando gianotti IT (b. 1920) |
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| lorenzo gianotti Italian politician, IT (b. 1939) |
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| gian franco gianotti Italian philologist, IT (b. 1942) |
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| michele gianotti IT (b. 1952) |
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| maurizio gianotti (b. 1953) |
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