Last name แก้วพัฒน์ (Keawpat 
, แก้วพัฒน์, Kaewpat 
) , in the world, is a rare cognomen. The surname แก้วพัฒน์ is habitual in South Korea, where it is a rare surname, Thailand, and the United States, where it is an extremely rare surname. Much less frequently, แก้วพัฒน์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Keawpat | Thailand |
| Kaewpat | South Korea, Thailand |
| Kaewphat | United States, Thailand |