Worldwide, Gunarajan (Gunarajan 
) is a very rare masculine given name. The forename Gunarajan is characteristic of Malaysia, where it is a very rare boy's name, and India, where it is an extremely rare boy's name. Likewise, Gunarajan is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Gunarajan | Canada, Malaysia, India, Australia, Germany |