Surname Chiangnun (Chiangnun 
) , in all the world, is a very rare family name. The last name Chiangnun is characteristic of South-eastern Asia, particularly Thailand, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Chiangnun | Thailand |
Rung, Methin, Wanpen, Jirawin, and Nopphachai