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 | Germany, Australia, Switzerland, United States, United Kingdom |
| Aldring | Mexico, Philippines, United States, Peru, Nicaragua |
| Aldur | Germany, Iraq, Brazil, United States, United Kingdom |
| Aldr | Iraq, United States, Syria, Saudi Arabia |
| frank aldr |
|