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