Cognomen Wiangjun (Wiangjun 
) , in the entire world, is a very rare last name. The family name Wiangjun is characteristic of Thailand, where it is a rare surname, and the United States, where it is an extremely rare surname. Very seldom, Wiangjun is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Wiangjun | United States, Thailand |