Family name ขวัญประเสริฐ (ขวัญประเสริฐ 
, Khwanprasert , Kwanprasert ) , in the entire world, is a rare cognomen. The surname ขวัญประเสริฐ is characteristic of South-eastern Asia, particularly Thailand, where it is a rare surname. Very seldom, ขวัญประเสริฐ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| ขวัญประเสริฐ, Kwanprasert, Khwanprasert | Thailand |