Last name 柏韧 (柏韧 
) , in all the world, is a very rare family name. The cognomen 柏韧 is habitual in Eastern Asia, particularly China, where it is an extremely rare surname. More prevalently, 柏韧 is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| 柏韧 | China |