Surname Decaraja (Decaraja 
) , in all the world, is a very rare cognomen. The family name Decaraja is habitual in South-eastern Asia, particularly Malaysia, where it is a very rare surname. Very seldom, Decaraja is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Decaraja | India, Malaysia |
Shanker, Sumithadevi, and Deneskumar