Cognomen Eider (Eider 
, Ejder 
, Aid 
) , throughout the world, is a common family name. The family name Eider is characteristic of Algeria, where it is quite a rare surname, Egypt, and Turkey. Also, Eider is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Eider | Germany, Spain, Malaysia, Colombia, Brazil |
| Ejder | Azerbaijan, Germany, France, Turkey, Saudi Arabia |
| Aid | Spain, Egypt, Turkey, Algeria, Saudi Arabia |
| เหมือนกัน | Thailand |
| shimon eider American rabbi (1938-2007) (b. 1938) |
|
|
| max eider British guitarist, GB |
|
|
| dieine eider BR |
|