Last name เพ็ชวัฒน์ (เพ็ชวัฒน์ 
) , throughout the world, is an extremely rare family name. The cognomen เพ็ชวัฒน์ is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname. Also, เพ็ชวัฒน์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| เพ็ชวัฒน์ | Thailand |