Cognomen Sutiwan (สุทธิวรรณ 
, Sutiwan 
) , globally, is a rare last name. The last name Sutiwan is habitual in South-eastern Asia, particularly Thailand, where it is a rare surname, Indonesia, where it is a very rare surname, and Malaysia, where it is an extremely rare surname. More frequently, Sutiwan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| สุทธิวรรณ | Thailand |
| Sutiwan | Thailand, India, Malaysia, Indonesia |