Cognomen จันวรรณ (จันวรรณ 
) , across the world, is a very rare last name. The family name จันวรรณ is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. Likewise, จันวรรณ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| จันวรรณ | Thailand |