Family name เตชะธรรมรัตน์ (เตชะธรรมรัตน์ 
) , around the world, is a very rare cognomen. The surname เตชะธรรมรัตน์ is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| เตชะธรรมรัตน์ | Thailand |