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