Cognomen Tosin (Tosin 
, Тосин 
, توسين) , globally, is a common family name. The cognomen Tosin is characteristic of Nigeria, where it is quite a common surname, Iceland, where it is quite a rare surname, and Niger. Not in comparison with a country's population, this name is the most popular in Nigeria, Indonesia, and Italy. Also, Tosin is the forename as well as the last name.
| luca tosin Italian historian and bibliologist (1975-), IT (b. 1975) |
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| michelle hyczy de siqueira tosin researcher |
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| manuela tosin researcher |
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| andrea tosin Italian mathematical engineer (1980-), IT (b. 1980) |
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| caterina tosin |
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| ricardo tosin Italian cyclist, IT (b. 1998) |
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