Last name 阿托 (Ato 
, Arto 
, Atto 
) , around the globe, is a widespread surname. The cognomen 阿托 is habitual in Ethiopia, where it is a common surname, Peru, where it is quite a rare surname, and Indonesia. In absolute terms, this name is the most popular in Ethiopia, Indonesia, and Philippines. Very seldom, 阿托 is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ato | Indonesia, Ethiopia, Philippines, Ghana, India |
| Arto | Indonesia, Philippines, Finland, Nigeria, India |
| Atto | Indonesia, Philippines, Ghana, India, Peru |
| 阿托 | China |