Surname Тассо (Tasso 
, Tassu 
, Тассо 
) , in the world, is quite a common last name. The cognomen Тассо is characteristic of Vanuatu, where it is quite a common surname, Estonia, where it is quite a rare surname, and Lebanon. Not in comparison with a country's population, it is commonest in Brazil, India, and Italy. Likewise, Тассо is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Tasso | Italy, United States, India, Argentina, Brazil |
| Tassu | Cameroon, Italy, United States, India, France |
| Тассо | Kazakhstan, Russia, Ukraine |