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