Cognomen Tonelli (Tonelli 
, トネリ) , globally, is a common surname. The last name Tonelli is characteristic of San Marino, where it is quite a common surname, British Virgin Islands, and Italy. In absolute terms, the name is most common in Italy, Brazil, and Argentina. Much less frequently, Tonelli is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Tonelli | Brazil, Italy, Argentina, United States, France |
| alberto tonelli Italian painter (1496-1540) (b. 1496) |
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giuseppe tonelli Italian painter (1668-1732), FR (b. 1668) |
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| antonio tonelli IT (b. 1686) |
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anna tonelli Italian portrait painter (c. 1763–1846), FR (b. 1763) |
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| francesco tonelli (b. 1727) |
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ignazio tonelli Italian politician, IT (b. 1804) |
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| andrea tonelli IT (b. 1793) |
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albino tonelli IT (b. 1852) |
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tonelli sándor economist, HU (b. 1882) |
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leonida tonelli Italian mathematician (1885-1946), IT (b. 1885) |
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| luigi tonelli IT (b. 1828) |
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| alberto tonelli Italian mathematician (1850-1920), IT (b. 1850) |
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ideler tonelli Argentinian lawyer and judge (1924-2016), AR (b. 1924) |
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maria valentina tonelli Italian pharmacist, essayist and editor, IT (b. 1939) |
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annalena tonelli Italian lawyer and activist, IT (b. 1943) |
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