Cognomen Ruangsawasdi (Ruangsawasdi 
) , globally, is a very rare surname. The surname Ruangsawasdi is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Ruangsawasdi | Thailand |
| nisarat ruangsawasdi researcher (ORCID 0000-0002-4710-8022) |
|