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