Cognomen Mohanarajan (Mohanarajan 
) , around the world, is a very rare surname. The last name Mohanarajan is characteristic of Malaysia, where it is a rare surname, the United Kingdom, where it is a very rare surname, and Germany, where it is an extremely rare surname. In absolute terms, it is the most numerous in Malaysia, India, and the United Kingdom. More frequently, Mohanarajan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Mohanarajan | Germany, Canada, United Kingdom, India, Malaysia |