Cognomen ادر (ادر 
) , around the globe, is a rare last name. The family name ادر is habitual in Sudan, where it is a rare surname, Morocco, and Saudi Arabia, where it is a very rare surname. Very seldom, ادر is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| ادر | Iran, Morocco, Egypt, Sudan, Saudi Arabia |