Family name อ่อนหวาน (Mellicent 
, Mellow 
, Onwan 
) , all around the world, is quite a rare surname. The surname อ่อนหวาน is characteristic of Thailand, where it is quite a rare surname, New Zealand, where it is a rare surname, and Israel. Measured by absolute frequency, it most frequently occurs in Thailand, the United States, and India. Very seldom, อ่อนหวาน is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Mellicent | Philippines, South Africa, India, United States, Nigeria |
| Mellow | Indonesia, Philippines, Canada, India, United States |
| Onwan | India, United States, Nigeria, Thailand |
Aontimwong, and Onwaan