Cognomen ชูวรรณ (Chuwan 
, ชูวรรณ ) , in the world, is quite a rare surname. The family name ชูวรรณ is habitual in Bhutan, where it is quite a common surname, Nepal, where it is quite a rare surname, and Malaysia, where it is a rare surname. Measured by absolute frequency, it is the most numerous in Southern Asia, particularly Nepal, Bhutan, and India. Very seldom, ชูวรรณ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Chuwan | Thailand, Nepal, Bhutan, United States, India |
| ชูวรรณ | Thailand |