Cognomen ธรรมธีรสุนทร (ธรรมธีรสุนทร 
, Thamteersoonthorn) , in the entire world, is a very rare surname. The last name ธรรมธีรสุนทร is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| ธรรมธีรสุนทร | Thailand |