Surname พลนภา (Ponnapa 
, พลนภา ) , across the world, is a very rare last name. The family name พลนภา is characteristic of Hong Kong, where it is a rare surname, New Zealand, and Thailand, where it is a very rare surname. Measured by absolute frequency, it is the most numerous in Hong Kong, India, and Thailand. More frequently, พลนภา is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ponnapa | Hong Kong, India, New Zealand, Thailand |
| พลนภา | Thailand |