Surname ประสงศ์ (ประสงศ์ 
) , across the world, is an extremely rare last name. The surname ประสงศ์ is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname. More prevalently, ประสงศ์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| ประสงศ์ | Thailand |