Cognomen เก้าประเสริฐ (เก้าประเสริฐ, Ninprasurt 
) , around the world, is an extremely rare last name. The cognomen เก้าประเสริฐ is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Ninprasurt | Thailand |