Cognomen Gregorini (Gregorini 
, Грегорини) , in the world, is quite a rare family name. The surname Gregorini is characteristic of Italy, where it is quite a rare surname, Argentina, and Paraguay. In absolute terms, it is commonest in Italy, Argentina, and Brazil. Much less frequently, Gregorini is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Gregorini | Paraguay, Argentina, Brazil, France, Italy |
| ludovico gregorini Italian architect and engineer, IT (b. 1661) |
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| domenico gregorini Italian architect, IT (b. 1692) |
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giovanni andrea gregorini Italian entrepreneur and politician (1819-1878), IT (b. 1819) |
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| gregorio gregorini (b. 1827) |
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francesca gregorini musician, US (b. 1968) |
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| augusto gregorini Italian businessman (b. 1937) |
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| loretta gregorini Italian astronomer, IT (b. 1948) |
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| jindřich gregorini (b. 1939) |
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| maurizio gregorini IT (b. 1959) |
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| giovanni gregorini (b. 1966) |
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| marilena gregorini researcher |
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| armando gregorini Italian malacologist, IT |
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| charles gregorini French cyclist, FR |
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| pablo gregorini researcher |
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| silvia gregorini IT (b. 1983) |
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