Surname ธรรมา (Thamma 
, ธรรมา , Thumana 
) , throughout the world, is quite a rare family name. The cognomen ธรรมา is habitual in Thailand, where it is quite a rare surname, Myanmar, and Qatar, where it is a rare surname. Not in comparison with a country's population, it is commonest in India, Thailand, and Myanmar. Much less frequently, ธรรมา is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Thamma | Thailand, India, United States, Myanmar, Qatar |
| ธรรมา | Thailand |
| Thumana | South Africa, India, Myanmar |