Family name Landolfi (Landolfi 
, Ландольфі 
, לנדולפי 
) , around the world, is quite a common cognomen. The family name Landolfi is characteristic of Italy, where it is quite a rare surname, Argentina, and Switzerland, where it is a rare surname. In absolute terms, it most frequently occurs in Italy, the United States, and Argentina. Very seldom, Landolfi is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Landolfi | Brazil, Italy, France, United States, Argentina |
| Ландольфі | Ukraine |
| לנדולפי | Israel |
| dolfino landolfi Swiss politician and typographer, CH (b. 1500) |
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| carlo ferdinando landolfi Italian luthier, IT (b. 1714) |
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| luigi landolfi Italian latinist, poet and lawyer (1814-1890), IT (b. 1814) |
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michele landolfi Italian physician, IT (b. 1878) |
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tommaso landolfi Italian author and translator (1908-1979), IT (b. 1908) |
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antonio landolfi Italian politician (1930-2011), IT (b. 1930) |
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mario landolfi Italian journalist and politician, IT (b. 1959) |
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| juán landolfi Argentine footballer, AR (b. 1914) |
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| lino landolfi Italian comics writer and artist, IT (b. 1925) |
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| egídio landolfi Brazilian association football player (1928-1998), BR (b. 1928) |
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| maurizio landolfi Italian archaeologist (1950-), IT (b. 1950) |
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| andrea landolfi Italian germanist (1957-), IT (b. 1957) |
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| giuseppe landolfi petrone Italian philosopher of language (1957-), IT (b. 1957) |
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| idolina landolfi Italian writer, IT (b. 1958) |
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| luciano landolfi (b. 1959) |
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