Last name พนศิริรัตน์ (พนศิริรัตน์ 
) , around the world, is an extremely rare family name. The cognomen พนศิริรัตน์ is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| พนศิริรัตน์ | Thailand |