Surname พงศ์พิชญศิริ (พงศ์พิชญศิริ 
) , all over the world, is a very rare last name. The cognomen พงศ์พิชญศิริ is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| พงศ์พิชญศิริ | Thailand |