Surname แทนธรรม (แทนธรรม 
, Tantham ) , worldwide, is a very rare family name. The last name แทนธรรม is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Likewise, แทนธรรม is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Tantham, แทนธรรม | Thailand |