Family name 楷翰 (楷翰 
) , in the entire world, is a very rare last name. The family name 楷翰 is characteristic of Eastern Asia, particularly China, where it is an extremely rare surname. More prevalently, 楷翰 is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| 楷翰 | China |