Family name รัตนโรจนธรรม (รัตนโรจนธรรม 
) , all around the world, is a very rare surname. The family name รัตนโรจนธรรม is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| รัตนโรจนธรรม | Thailand |