Surname ถับ (Thap 
, ถับ 
) , in all the world, is quite a rare family name. The cognomen ถับ is habitual in Nepal, where it is quite a rare surname, Qatar, and Malaysia, where it is a rare surname. Measured by absolute frequency, this name is the most popular in India, Nepal, and Vietnam. Likewise, ถับ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Thap | Vietnam, Nepal, India, Malaysia, Saudi Arabia |
| ถับ | Thailand |