Family name เพชรพูนศิริ (เพชรพูนศิริ 
) , around the globe, is an extremely rare last name. The last name เพชรพูนศิริ is habitual in South-eastern Asia, particularly Thailand, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| เพชรพูนศิริ | Thailand |