Family name ออนวรรณ (ออนวรรณ 
) , all over the world, is an extremely rare surname. The cognomen ออนวรรณ is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Also, ออนวรรณ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| ออนวรรณ | Thailand |