Family name ประถมพงษ์ (ประถมพงษ์ 
) , worldwide, is a very rare last name. The last name ประถมพงษ์ is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. Likewise, ประถมพงษ์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| ประถมพงษ์ | Thailand |