Last name Janni (Janni 
, جاني 
, יאני 
) , throughout the world, is a common cognomen. The family name Janni is characteristic of Iran, where it is quite a common surname, India, where it is quite a rare surname, and Sudan. Very seldom, Janni is the forename as well as the last name.
| vincenzo janni Italian mathematician (1819-1891), IT (b. 1819) |
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ettore janni Italian journalist and politician (1875-1956), IT (b. 1875) |
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antonio janni Italian footballer (1904-1987), IT (b. 1904) |
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| ugo janni IT (b. 1865) |
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| guglielmo janni IT (b. 1872) |
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| guglielmo janni Italian painter (1892-1958), IT (b. 1892) |
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ireneo janni Italian painter and sculptor, IT (b. 1946) |
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| august janni (b. 1895) |
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| joseph janni British film director, IT (b. 1916) |
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janni pedersen Danish journalist, DK (b. 1968) |
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janni goslinga Dutch actress, NL (b. 1969) |
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| amedeo de janni IT (b. 1915) |
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janni olesen Danish writer (b. 1975) |
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janni olsson Swedish actress (b. 1985) |
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janni arnth Danish female footballer (b. 1986) |
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