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