Last name เพ็ชรสมัย (เพ็ชรสมัย 
) , all around the world, is a very rare cognomen. The surname เพ็ชรสมัย is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. Very seldom, เพ็ชรสมัย is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| เพ็ชรสมัย | Thailand |