Last name รัตนโรจน์ศิริ (รัตนโรจน์ศิริ 
) , globally, is an extremely rare surname. The surname รัตนโรจน์ศิริ is habitual in South-eastern Asia, particularly Thailand, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| รัตนโรจน์ศิริ | Thailand |