Surname เพิ่มพงศ์ (Permpong 
, Permphong , Pherttipong ) , across the world, is an extremely rare family name. The surname เพิ่มพงศ์ is habitual in South-eastern Asia, particularly Thailand, where it is an extremely rare surname. Much more frequently, เพิ่มพงศ์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Permpong | United States, Thailand |
| Permphong, Pherttipong | Thailand |