Surname ธรรมนิยาม (Thammani 
, ธรรมนิยาม , Thammaniyam ) , all around the world, is a very rare last name. The surname ธรรมนิยาม is characteristic of Thailand, where it is a very rare surname, and India, where it is an extremely rare surname. Very seldom, ธรรมนิยาม is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Thammani | India, Thailand |
| Thammaniyam, ธรรมนิยาม | Thailand |