Surname Santto (Santto 
) , all around the world, is a very rare family name. The surname Santto is characteristic of Argentina, where it is a very rare surname, Brazil, where it is an extremely rare surname, and the United States. More frequently, Santto is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Santto | Brazil, United States, India, Argentina |