Surname Jjang (จัง 
, Jjang 
) , all over the world, is a rare family name. The surname Jjang 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. Much less frequently, Jjang is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| จัง | Thailand |
| Jjang | Indonesia, United States, Malaysia |