Last name พงษ์เพชร (พงษ์เพชร 
, Phongphet 
, Pongphet 
) , in the world, is a rare family name. The surname พงษ์เพชร is habitual in Thailand, where it is quite a rare surname, France, where it is an extremely rare surname, and the United States. More prevalently, พงษ์เพชร is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| พงษ์เพชร | Thailand |
| Phongphet | United States, Laos, Thailand, France |
| Pongphet | Malaysia, Thailand |
| Pongpetch | United States, Thailand |
Phongpech, Phongpet, Phongpetra, Phongpheaw, Phongphech, Phongphesat, Phongphetch, Phongphethai, Phongphetra, Phongthaphet, Plongpetch, Pongpech, Pongpechan, Pongpechara, Pongpecth, Pongpet, Pongpeth, Pongpetr, Pongpetra, Pongphech, Pongphetra, and Poungphet