Cognomen อัมวรรณ (อัมวรรณ 
, Amwan 
) , throughout the world, is a very rare family name. The cognomen อัมวรรณ is characteristic of Thailand, where it is a rare surname, Canada, where it is an extremely rare surname, and Nigeria. Measured by absolute frequency, it is the most numerous in Thailand, India, and Nigeria. Very seldom, อัมวรรณ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| อัมวรรณ | Thailand |
| Amwan | Thailand, Canada, Nigeria, India |