Worldwide, ייאסו (Iyasu 
, ייאסו 
) is a common masculine given name. The first name ייאסו is characteristic of Ethiopia, where it is quite a common masculine name, Nigeria, where it is a rare principally boy's, but very seldom girly name, and India, where it is an extremely rare epicene name. Likewise, ייאסו is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Iyasu | Nigeria, Ethiopia, United States, India, Japan |
| ייאסו | Israel |