Cognomen พัชรวงศ์นิธิ (พัชรวงศ์นิธิ 
) , in the world, is an extremely rare family name. The family name พัชรวงศ์นิธิ is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| พัชรวงศ์นิธิ | Thailand |