Cognomen เพียรเพชร (เพียรเพชร 
) , in the entire world, is a very rare surname. The cognomen เพียรเพชร is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Also, เพียรเพชร is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| เพียรเพชร | Thailand |