Cognomen Gia Hân (Gia Hân 
) , across the world, is a very rare family name. The cognomen Gia Hân is characteristic of South-eastern Asia, particularly Vietnam, where it is a very rare surname. Likewise, Gia Hân is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Gia Hân | Vietnam, Japan |