Family name المعدل (المعدل 
) , in the entire world, is a rare last name. The cognomen المعدل is habitual in Iraq, where it is quite a rare surname, and Egypt, where it is a very rare surname. Very seldom, المعدل is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| المعدل | Iraq, Egypt |