Last name Aldr (Alder 
, Aldring 
, Aldur 
) , in all the world, is a common cognomen. The surname Aldr is habitual in Switzerland, where it is quite a common surname, Israel, and Paraguay, where it is quite a rare surname. Not in comparison with a country's population, this name is the most popular in the United States, the United Kingdom, and Switzerland. Also, Aldr is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Alder | Australia, United Kingdom, United States, Switzerland, Germany |
| Aldring | United States, Nicaragua, Mexico, Philippines, Peru |
| Aldur | United Kingdom, United States, Iraq, Germany, Brazil |
| Aldr | Saudi Arabia, Syria, Iraq, United States |
| frank aldr |
|