Family name サトゥ (Satu 
, サトゥ 
) , in all the world, is a common last name. The cognomen サトゥ is characteristic of Solomon Islands, where it is quite a common surname, Indonesia, where it is quite a rare surname, and Bangladesh. Not in comparison with a country's population, this name is the most popular in Indonesia, Bangladesh, and India. Likewise, サトゥ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Satu | Bangladesh, Finland, India, Indonesia, Turkey |
| サトゥ | Japan |