Cognomen Клав (Klav 
, Клав 
) , all around the world, is a very rare surname. The last name Клав is habitual in Germany, where it is a very rare surname, Russia, and Malaysia, where it is an extremely rare surname. Much less frequently, Клав is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Klav | Germany, India, Canada, Malaysia |
| Клав | Russia |