Cognomen ادار (Adar 
, ادار 
) , all over the world, is a common family name. The cognomen ادار is characteristic of Israel, where it is quite a common surname, Turkey, where it is quite a rare surname, and Morocco. Not in comparison with a country's population, this name is the most popular in Turkey, Israel, and Bangladesh. Likewise, ادار is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Adar | Somalia, Bangladesh, Turkey, India, Israel |
| ادار | Saudi Arabia, Iraq, Morocco, Yemen |