All around the world, Santosu (Santosu 
) is a rare epicene forename. The forename Santosu is habitual in Southern Asia, particularly India, where it is a very rare epicene name. Much less frequently, Santosu is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Santosu | Brazil, United States, Malaysia, India |