Family name หลาน (Lan 
, Lhan 
, หลาน 
) , in all the world, is a widespread surname. The surname หลาน is habitual in Malaysia, where it is a common surname, Macao, and Vietnam, where it is quite a common surname (explore the name in all countries). In absolute terms, it is the most numerous in China, Malaysia, and Vietnam. Very seldom, หลาน is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Lan | Malaysia, China, Indonesia, Vietnam, Myanmar |
| Lhan | Malaysia, China, Indonesia, India, Myanmar |
| หลาน | Thailand |