Cognomen อุทัยแจ่ม (อุทัยแจ่ม, Uthaaijam 
) , worldwide, is an extremely rare surname. The surname อุทัยแจ่ม is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Uthaaijam | Thailand |