Surname Rostagno (Rostagno 
) , across the world, is quite a rare cognomen. The last name Rostagno is characteristic of Argentina, where it is quite a rare surname, Italy, and Uruguay. Measured by absolute frequency, it is the most numerous in Italy, Argentina, and France. Much less frequently, Rostagno is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Rostagno | France, Argentina, Italy, United States, Uruguay |
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enrico rostagno Italian classical philologist, IT (b. 1860) |
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| fortunato rostagno entomologist (1853-1934) (b. 1853) |
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| giuseppe ippolito rostagno (b. 1877) |
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| paolo rostagno (b. 1883) |
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| carlo rostagno Italian military personnel, IT (b. 1894) |
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| juan rostagno sport shooter, AR (b. 1899) |
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| paolo rostagno Italian association football player (1920-2004), IT (b. 1920) |
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| horacio luís balbi rostagno Uruguayan writer, UY (b. 1930) |
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| mauro rostagno Italian journalist and politician (1942-1988), IT (b. 1942) |
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| sergio rostagno IT (b. 1934) |
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| marco rostagno IT (b. 1935) |
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| elio rostagno Italian politician, IT (b. 1947) |
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| aldo rostagno IT (b. 1937) |
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| antonio rostagno Italian musicologist and pianist (1962-2021), IT (b. 1962) |
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| ippolita rostagno American jewelry designer, US (b. 1963) |
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Mr, Dora, Gian, Lara, Lina, Lino, Luca, Luis, Jose, John, Joel, Jean, July, Juan, Tito, Titi, Nora, Nona, Neli, Elio, Elsa, Elva, Rita, Remo, Rosa, Raul, Ms, Sol, Ana, Eda, Ida, Idi, Ian, Zoe, Ugo, Mark, Elma, Sara, Alen, Alan, Aldo, Anto, Anna, Abel, Agus, Agos, Bart, Bele, Alex, and Elmo