Last name Käuper (Käuper 
) , throughout the world, is a rare cognomen. The last name Käuper is habitual in Germany, where it is a rare surname, and Spain, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Käuper | Germany, Spain |
| ole käuper German association football player, DE (b. 1997) |
|