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