Family name Nirojan (Nirojan 
) , across the world, is quite a rare surname. The cognomen Nirojan is habitual in Sri Lanka, where it is quite a rare surname, Qatar, and Saudi Arabia, where it is a rare surname. Also, Nirojan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Nirojan | Saudi Arabia, Malaysia, India, Sri Lanka, Qatar |