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