Surname หลับ (Lap 
, หลับ 
) , in the entire world, is a common last name. The cognomen หลับ is habitual in Taiwan, where it is quite a common surname, Slovenia, where it is quite a rare surname, and Hong Kong. Measured by absolute frequency, this name is the most popular in Taiwan, Malaysia, and Netherlands. Also, หลับ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Lap | Taiwan, Netherlands, Vietnam, Malaysia, United States |
| หลับ | Thailand |