Family name แก้วมูลมุข (แก้วมูลมุข, Kaewmunmuk 
) , all over the world, is an extremely rare surname. The last name แก้วมูลมุข is habitual in South-eastern Asia, particularly Thailand, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Kaewmunmuk | Thailand |