Family name Mohanaraja (Mohanaraja 
) , worldwide, is a very rare last name. The cognomen Mohanaraja is habitual in Malaysia, where it is a very rare surname, and Canada, where it is an extremely rare surname. Much more frequently, Mohanaraja is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Mohanaraja | Malaysia, United Kingdom, India, Germany, Canada |