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