Cognomen เพ็ชรจู (เพ็ชรจู 
) , globally, is a very rare surname. The last name เพ็ชรจู is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Likewise, เพ็ชรจู is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| เพ็ชรจู | Thailand |