Surname Küpper-Knoob (Küpper-Knoob 
) , across the world, is an extremely rare cognomen. The family name Küpper-Knoob is characteristic of Western Europe, particularly Germany, where it is an extremely rare surname. Parts of the name also exists independently as a last name Küpper, and a last name Knoob.
| VARIANT | COUNTRY |
|---|---|
| Küpper-Knoob | Germany |