Cognomen สมวรรณ์ (สมวรรณ์ 
) , around the world, is a rare last name. The last name สมวรรณ์ is habitual in South-eastern Asia, particularly Thailand, where it is a rare surname. Much less frequently, สมวรรณ์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| สมวรรณ์ | Thailand |