Surname พูนวงศ์ (พูนวงศ์ 
, Poonwong 
) , in the entire world, is a rare cognomen. The last name พูนวงศ์ is characteristic of Thailand, where it is a rare surname, Myanmar, where it is a very rare surname, and the United States, where it is an extremely rare surname. Much less frequently, พูนวงศ์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| พูนวงศ์ | Thailand |
| Poonwong | Myanmar, United States, Thailand |