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