Cognomen พงษ์รัตน์ (พงษ์รัตน์ 
, Pongrat 
, Pongrut ) , worldwide, is a rare last name. The surname พงษ์รัตน์ is characteristic of Thailand, where it is a rare surname, Germany, where it is an extremely rare surname, and the United States. Also, พงษ์รัตน์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| พงษ์รัตน์, Pongrut, Phongrat | Thailand |
| Pongrat | Thailand, United States, Germany |
Pajongrat, Phajongrat, Phaongrut, Phayoongrat, Phongrut, Pongratn, and Pradongrat