Last name รุ่งเพชรวงศ์ (รุ่งเพชรวงศ์, Rungpetwong, Rungpetchwong 
) , across the world, is a very rare family name. The family name รุ่งเพชรวงศ์ is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Rungpetchwong, Roongpetchwong | Thailand |