All over the world, เพ็ชรัช (เพ็ชรัช 
) is a very rare unisex forename. The first name เพ็ชรัช is habitual in South-eastern Asia, particularly Thailand, where it is a very rare epicene name. Very seldom, เพ็ชรัช is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| เพ็ชรัช | Thailand |