Surname Tovio-Asato (Tovio-Asato 
) , globally, is an extremely rare last name. The cognomen Tovio-Asato is characteristic of Northern America, particularly the United States, where it is an extremely rare surname. Parts of the name also exists independently as a last name Tovio, and a last name Asato.
| VARIANT | COUNTRY |
|---|---|
| Tovio-Asato | United States |