Globally, أيو (أيو 
) is a rare epicene forename. The given name أيو is characteristic of Iraq, where it is a rare unisex name, Egypt, where it is a very rare boy's name, and Morocco. Very seldom, أيو is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| أيو | Morocco, Iraq, Egypt |