Family name Rangaraja (Rangaraja 
) , all around the world, is a rare last name. The surname Rangaraja is characteristic of India, where it is a very rare surname, and the United States, where it is an extremely rare surname. Also, Rangaraja is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Rangaraja | India, United States |