Family name Кейдер (Keider 
, Keyder 
, Кейдер 
) , across the world, is a rare last name. The surname Кейдер is habitual in Austria, where it is quite a rare surname, Venezuela, where it is a rare surname, and Ethiopia. Also, Кейдер is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Keider | Austria, Venezuela, Ethiopia, United States, Colombia |
| Keyder | Venezuela, Peru, United States, Colombia, Turkey |
| Кейдер | Kazakhstan, Russia |