Cognomen Клеттер (Kletter 
, Клеттер 
) , in the entire world, is a rare last name. The family name Клеттер is characteristic of Austria, where it is a rare surname, Estonia, and Netherlands. Measured by absolute frequency, it is commonest in the United States, Germany, and Russia.
| VARIANT | COUNTRY |
|---|---|
| Kletter | Netherlands, Germany, Canada, United States, Austria |
| Клеттер | Kazakhstan, Russia, Ukraine |