Surname แก้วประเสริฐ (Kaewprasert 
, แก้วประเสริฐ, Keawprasert ) , in the entire world, is quite a rare family name. The surname แก้วประเสริฐ is habitual in Thailand, where it is quite a rare surname, Australia, where it is a very rare surname, and the United States, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Kaewprasert | Canada, United States, Thailand, Australia |
| Keawprasert | United States, Thailand |
| Kaeoprasoet | Thailand |
Gaewpraserd, Gaewprasert, Gaewprasroet, Kaeoprasert, Kaeoprasoert, Kaeoprasroeth, Kaeowprasert, Kaewpasert, Kaewprasart, Kaewpraseat, Kaewpraseet, Kaewpraserd, Kaewpraserp, Kaewpraserth, Kaewpraset, Kaewprasoet, Kaewprasroeth, Kaewprasurt, Kaewpresert, Kaewprosert, Kaoprasert, Keawprasart, Keawpraseart, Keawpraserd, Keawprasoet, Keawprasurt, and Keopraseuth