Surname Dãn (Dãn 
) , all around the world, is a very rare family name. The last name Dãn is habitual in Algeria, where it is a very rare surname, Myanmar, and Vietnam, where it is an extremely rare surname. Also, Dãn is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Dãn | Myanmar, Algeria, Vietnam |