Surname Rajangan (Rajangan 
) , all over the world, is a very rare cognomen. The last name Rajangan is habitual in Malaysia, where it is a very rare surname, and India, where it is an extremely rare surname. Much less frequently, Rajangan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Rajangan | Malaysia, India |
Seeman, Others, Sreenivasan, Chandra Anand, Chandra Anand S, and Chandraprasad