Family name Ruf-Lehmann (Ruf-Lehmann 
) , in all the world, is an extremely rare last name. The cognomen Ruf-Lehmann is habitual in Western Europe, particularly Germany, where it is an extremely rare surname. Parts of the name also exists independently as a last name Ruf, and a last name Lehmann.
| VARIANT | COUNTRY |
|---|---|
| Ruf-Lehmann | Germany |