Cognomen พงศิริ (พงศิริ 
) , around the world, is an extremely rare surname. The surname พงศิริ is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. More frequently, พงศิริ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| พงศิริ | Thailand |
พิลาวุฒิ, พิศาลสาคร, and จันทิมางกูล