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