Surname วันแจ่ม (Wanjam 
, วันแจ่ม, Wantajaem ) , around the world, is a very rare family name. The cognomen วันแจ่ม is characteristic of Thailand, where it is a very rare surname, Nigeria, where it is an extremely rare surname, and India. Also, วันแจ่ม is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Wanjam | India, Thailand, Nigeria |
| Wantajaem | Thailand |