Cognomen Jahwang (Jahwang 
) , all over the world, is a rare surname. The surname Jahwang is characteristic of South Korea, where it is a rare surname, Thailand, where it is an extremely rare surname, and China. Very seldom, Jahwang is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Jahwang | China, South Korea, Thailand, United States, India |