Last name Viani (Viani 
) , all around the world, is a common surname. The last name Viani is habitual in Malta, where it is quite a common surname, Italy, where it is quite a rare surname, and Indonesia. Measured by absolute frequency, it is the most numerous in Indonesia, Italy, and Argentina. Much less frequently, Viani is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Viani | Argentina, Italy, Brazil, United States, Indonesia |
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antonio maria viani Italian painter (1550-1635), IT (b. 1550) |
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| bernardino de' viani (b. 1501) |
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giovanni maria viani Itlaian painter and engraver (1636-1700), IT (b. 1636) |
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domenico maria viani Italian painter (1668-1711), IT (b. 1668) |
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| sostegno viani (b. 1690) |
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| giorgio viani Italian numismatist and historian, IT (b. 1762) |
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| serafino viani Italian painter, IT (b. 1768) |
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| prospero viani Italian academic, writer, historian and literary critic, IT (b. 1812) |
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| bonaventura viani Italian Augustinian theologian (1813-1883) (b. 1813) |
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lorenzo viani Italian painter, engraver and writer (1882-1936), IT (b. 1882) |
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| agostino viani IT (b. 1841) |
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alberto viani Italian sculptor (1906-1989), IT (b. 1906) |
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| eva viani author (20th century) (b. 1901) |
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| gipo viani Italian footballer (1909–1969), IT (b. 1909) |
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| vinicio viani Italian association football player and association football manager (1913-1983), IT (b. 1913) |
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