Family name รัตน์นิธิพงศ์ (รัตน์นิธิพงศ์ 
) , in the entire world, is a very rare cognomen. The last name รัตน์นิธิพงศ์ is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| รัตน์นิธิพงศ์ | Thailand |