Surname اسو (Aso 
, اسو 
) , across the world, is a common cognomen. The last name اسو is habitual in Iraq, where it is quite a common surname, Algeria, where it is quite a rare surname, and Libya. In absolute terms, it is commonest in Iraq, Nigeria, and Algeria. Likewise, اسو is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Aso | Egypt, Iraq, India, Nigeria, Algeria |
| اسو | Saudi Arabia, Syria, Iraq, Sudan, Egypt |