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