Family name ห้วน (Huan 
, ห้วน) , in all the world, is a common last name. The last name ห้วน is habitual in Malaysia, where it is a common surname, Singapore, where it is quite a rare surname, and China. In absolute terms, it is the most numerous in Malaysia, China, and Vietnam. Also, ห้วน is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Huan | Vietnam, United States, Indonesia, Malaysia, China |