Throughout the world, Vẩn (Vẩn 
) is a very rare epicene first name. The given name Vẩn is habitual in South-eastern Asia, particularly Vietnam, where it is a very rare unisex name. Likewise, Vẩn is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Vẩn | Vietnam |