Cognomen Fiorin (Fiorin 
) , around the globe, is quite a rare last name. The family name Fiorin is characteristic of Italy, where it is quite a rare surname, Brazil, where it is a rare surname, and Belgium. Measured by absolute frequency, it is the most numerous in Italy, Brazil, and France. Very seldom, Fiorin is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Fiorin | Brazil, Italy, France, Argentina, Democratic Republic of the Congo |
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valentina fiorin Italian volleyball player, IT (b. 1984) |
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| josé luiz fiorin Brazilian linguist, BR (b. 1942) |
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| fulvio fiorin Italian association football player, IT (b. 1962) |
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| fabiano fiorin Fabiano Fiorin; illustrator, IT (b. 1964) |
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| valeriano fiorin Italian association football player, IT (b. 1966) |
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| gaetano fiorin Italian linguist and logician (1978-), IT (b. 1978) |
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| giacomo fiorin researcher |
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| paula regina fiorin researcher (ORCID 0000-0002-6263-9833) |
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| lucia fiorin researcher |
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| fiorin durmishaj Albanian footballer, AL (b. 1996) |
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