Cognomen พงศ์เดชา (พงศ์เดชา 
) , worldwide, is a very rare family name. The last name พงศ์เดชา is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. Very seldom, พงศ์เดชา is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| พงศ์เดชา | Thailand |