Cognomen Leihner (Leihner 
, Лейхнер 
) , in the world, is a rare surname. The family name Leihner is habitual in Kazakhstan, where it is a rare surname, Russia, and Germany, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Leihner | Germany, Argentina |
| Лейхнер | Kazakhstan, Russia, Ukraine |