Cognomen 丹昀 (丹昀 
) , around the globe, is a very rare surname. The cognomen 丹昀 is habitual in Eastern Asia, particularly China, where it is an extremely rare surname. More prevalently, 丹昀 is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| 丹昀 | China |