Surname Reffi (Reffi 
) , throughout the world, is a rare family name. The surname Reffi is habitual in San Marino, where it is a common surname, Uruguay, where it is a rare surname, and Hungary. In absolute terms, it is the most numerous in Indonesia, San Marino, and Morocco. More prevalently, Reffi is the forename as well as the last name.
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| Reffi | Indonesia, San Marino, Morocco, Hungary, United States |
| pietro reffi Sammarinese politician (1927-2013), SM (b. 1927) |
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| marina busignani reffi Sammarinese painter, ceramist and politician, SM (b. 1930) |
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| anthony n reffi researcher (ORCID 0000-0002-2783-1678) |
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| alberto reffi SM |
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| eusebio reffi SM |
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| orlando reffi SM |
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| adriano reffi SM |
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| eugenio reffi SM |
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| alfredo reffi SM |
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