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