Cognomen 柯筠 (柯筠 
) , all around the world, is a very rare last name. The cognomen 柯筠 is characteristic of Eastern Asia, particularly China, where it is an extremely rare surname. More prevalently, 柯筠 is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| 柯筠 | China |