Last name แจ่มเหมือน (แจ่มเหมือน, Chaemmuean 
) , in the entire world, is an extremely rare surname. The cognomen แจ่มเหมือน is habitual in South-eastern Asia, particularly Thailand, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Chaemmuean | Thailand |