Family name จันวัน (Chanwan 
, จันวัน , Chan Wan 
) , worldwide, is a rare surname. The last name จันวัน is habitual in Thailand, where it is a rare surname, Malaysia, where it is a very rare surname, and the United States, where it is an extremely rare surname. Also, จันวัน is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Chanwan | China, South Korea, United States, Thailand, India |
| จันวัน | Thailand |
| Chan Wan | United States, Malaysia |