Cognomen แก้วประดิษฐ์ (แก้วประดิษฐ์, Kaeopradit 
, Kaewpradit 
) , all around the world, is quite a rare last name. The surname แก้วประดิษฐ์ is characteristic of Thailand, where it is quite a rare surname, and the United States, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Kaeopradit, Keawpradit | Thailand |
| Kaewpradit | United States, Brazil, Thailand |
Gaewpradit, Kaewpadit, Kaewpardit, Kaewphadith, Kaewpradid, Kaewpradist, Kaewpradith, Kaewpradits, Kaewpratthana, Kaopradit, and Keawpadit