Cognomen ธรรมพุทธิรัตน์ (ธรรมพุทธิรัตน์ 
) , in the world, is a rare family name. The family name ธรรมพุทธิรัตน์ is characteristic of South-eastern Asia, particularly Thailand, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| ธรรมพุทธิรัตน์ | Thailand |