Last name พลศิลา (Ponsila 
, พลศิลา , Phonsila ) , throughout the world, is a rare cognomen. The family name พลศิลา is characteristic of Thailand, where it is a rare surname, Finland, where it is a very rare surname, and Philippines, where it is an extremely rare surname. Very seldom, พลศิลา is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ponsila | Philippines, Thailand, India, Finland |
| พลศิลา, Pholsila, Phonsila | Thailand |