Cognomen Sigismondi (Sigismondi 
) , around the world, is quite a rare last name. The last name Sigismondi is habitual in Italy, where it is quite a rare surname, Switzerland, and Australia, where it is a rare surname. Measured by absolute frequency, it most frequently occurs in Italy, the United States, and Argentina. Much less frequently, Sigismondi is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Sigismondi | Italy, Switzerland, Argentina, United States, France |
| evandro sigismondi Italian politician and lawyer (1830-1891), IT (b. 1830) |
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carlo sigismondi Italian politician (1880-1962), IT (b. 1880) |
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| sigismondo sigismondi Italian politician, IT (b. 1839) |
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| pietro sigismondi Italian archbishop (1908-1967), IT (b. 1908) |
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| gino sigismondi Italian priest and historian (1910-1984), IT (b. 1910) |
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floria sigismondi Canadian artist and filmmaker, CA (b. 1965) |
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fabrizio sigismondi Czech equestrian, IT (b. 1981) |
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etelwardo sigismondi IT (b. 1974) |
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| roberto sigismondi italian photographer, IT (b. 1952) |
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| alberto sigismondi Italian politician, IT (b. 1957) |
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| francesca laura sigismondi IT (b. 1950) |
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| gualtiero sigismondi Italian priest and theologian, IT (b. 1961) |
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| pier luigi sigismondi Executive Director and Chief Supply Chain Officer - Unilever (b. 1966) |
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| oliver sigismondi AT (b. 1969) |
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| cristina sigismondi researcher |
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Mr, Raul, Rose, Remo, Rich, Rita, Davi, Dino, Gary, Gaia, Pier, Gian, Gino, Lino, Lisa, Liza, Luca, Luis, Luiz, Léa, Jack, Gina, Pina, Paul, Kaye, Ms, Max, Ali, Ana, Cã, Kim, Jon, Joe, Ema, Mary, Mael, Mike, Sara, Alex, Alec, Andy, Anna, Anne, Caro, Clio, Brad, Jose, and John