Surname Kü (Kü 
, Kū 
) , worldwide, is a rare cognomen. The cognomen Kü is characteristic of Myanmar, where it is a rare surname, Algeria, and Germany. Very seldom, Kü is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kü | Germany, Turkey, Vietnam, Algeria, Myanmar |
| Kū | China, Myanmar |