Family name รัตนรงค์ (รัตนรงค์ 
) , across the world, is a very rare last name. The surname รัตนรงค์ is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. Much less frequently, รัตนรงค์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| รัตนรงค์ | Thailand |