Family name เพ็ชรหลัก (เพ็ชรหลัก 
) , all around the world, is an extremely rare surname. The family name เพ็ชรหลัก is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| เพ็ชรหลัก | Thailand |