Last name Eldr (Elde 
, Eld 
, Eldur 
) , in the entire world, is quite a rare surname. The cognomen Eldr is characteristic of Northern Europe, particularly Norway, where it is quite a rare surname, Sweden, and Finland, where it is a rare surname. Not in comparison with a country's population, it is commonest in Norway, Egypt, and the United States. Likewise, Eldr is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Elde | Egypt, Norway, Philippines, Malaysia, Democratic Republic of the Congo |
| Eld | Egypt, Philippines, Brazil, United States, Democratic Republic of the Congo |
| Eldur | Estonia, Canada, India, United States, United Kingdom |
| Eldr | Brazil, India |