Cognomen Stefanelli (Stefanelli 
, Стефанелли 
, Стефанеллі 
) , throughout the world, is a common last name. The family name Stefanelli is habitual in San Marino, where it is a common surname, Italy, where it is quite a common surname, and Switzerland, where it is quite a rare surname. Not in comparison with a country's population, this name is the most popular in Italy, Brazil, and the United States. Much less frequently, Stefanelli is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Stefanelli | Italy, France, Brazil, United States, Argentina |
| Стефанелли | Russia |
| Стефанеллі | Ukraine |
| giovanni domenico stefanelli Roman Catholic archbishop (b. 1779) |
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| pietro stefanelli Italian entomologist (b. 1835) |
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| augusto stefanelli Italian biologist and zoologist, IT (b. 1884) |
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| aldo stefanelli (b. 1894) |
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simonetta stefanelli Italian actress and fashion designer, IT (b. 1954) |
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luis stefanelli Venezuelan politician, VE (b. 1957) |
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| alberto stefanelli Italian biologist (1908-2008), IT (b. 1908) |
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| joe stefanelli American artist (1921-2017), US (b. 1921) |
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| francesco stefanelli Italian politician (1922-1991), IT (b. 1922) |
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matteo stefanelli Italian translator, IT (b. 1975) |
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| benito stefanelli Itaian actor, IT (b. 1928) |
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íris stefanelli Brazilian actress, reporter and presenter of television and radio, BR (b. 1979) |
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nicolas stefanelli American chef |
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| lucia stefanelli torossi Italian antiquarian and art collector (1930-), IT (b. 1930) |
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| livio stefanelli Italian politician, IT (b. 1937) |
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