Family name Ruengcherngchum (Ruengcherngchum 
) , across the world, is an extremely rare surname. The last name Ruengcherngchum is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Ruengcherngchum | Thailand |
Duangrat, and Thunyaluck