Surname รัตนศักดิ์นิธิ (รัตนศักดิ์นิธิ 
) , throughout the world, is an extremely rare cognomen. The cognomen รัตนศักดิ์นิธิ is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| รัตนศักดิ์นิธิ | Thailand |