Surname آدر (Ader 
, آدر 
) , all around the world, is quite a common family name. The cognomen آدر is habitual in Estonia, where it is quite a common surname, France, where it is quite a rare surname, and Ethiopia. In absolute terms, it most frequently occurs in Ethiopia, the United States, and France. Likewise, آدر is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ader | Somalia, Ethiopia, United States, Democratic Republic of the Congo, France |
| آدر | Iran |