Cognomen หงส์ประเสริฐ (หงส์ประเสริฐ 
) , in all the world, is an extremely rare family name. The surname หงส์ประเสริฐ is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| หงส์ประเสริฐ | Thailand |