Last name Martoni (Martoni 
) , in the entire world, is quite a rare cognomen. The surname Martoni is habitual in Italy, where it is quite a rare surname, Hungary, where it is a rare surname, and Brazil. In absolute terms, the name is most common in Italy, Brazil, and Indonesia. Very seldom, Martoni is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Martoni | Indonesia, Argentina, Brazil, Italy, United States |
| nicola de martoni 14th c. notary, pilgrim, and author (b. 1350) |
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anselmo martoni Italian politician and mayor, IT (b. 1921) |
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| libero martoni IT (b. 1914) |
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| antônio martoni Brazilian rugby union footballer and coach, BR (b. 1961) |
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| francesco martoni Australian entomologist, AU |
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| giacomo martoni bishop of the Roman Catholic Church |
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| monica martoni researcher |
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| andrea a martoni researcher |
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| niccolo` de martoni IT |
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