Family name Duangjun (Duangjun 
) , worldwide, is a rare last name. The last name Duangjun is characteristic of South-eastern Asia, particularly Thailand, where it is a rare surname, and Philippines, where it is an extremely rare surname. Likewise, Duangjun is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Duangjun | United States, Thailand, Philippines |