Family name รัตนไทยเจริญ (รัตนไทยเจริญ 
) , all around the world, is an extremely rare cognomen. The cognomen รัตนไทยเจริญ is habitual in South-eastern Asia, particularly Thailand, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| รัตนไทยเจริญ | Thailand |