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