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