Surname Ruangchang (Ruangchang 
) , around the globe, is a very rare cognomen. The surname Ruangchang is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Ruangchang | Thailand |
Manus, Sawang, Sudteeporn, Kornnapha, and Kittaboon