Cognomen Tonu (Tonu 
, Тыну 
, Тону 
) , throughout the world, is quite a common family name. The cognomen Tonu is characteristic of Moldova, where it is quite a common surname, Bangladesh, where it is quite a rare surname, and Romania. Likewise, Tonu is the forename as well as the last name.
| vitalie tonu (b. 1955) |
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| nazmoon naher tonu researcher |
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| viorica tonu Moldovan association football player, MD (b. 1996) |
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