Surname กังวาฬ (กังวาฬ 
, Kangwan 
) , globally, is a rare last name. The family name กังวาฬ is characteristic of South-eastern Asia, particularly Thailand, where it is a rare surname. Likewise, กังวาฬ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| กังวาฬ | Thailand |
| Kangwan | United States, China, Thailand |