Cognomen Nerajan (Nerajan 
) , all over the world, is an extremely rare family name. The cognomen Nerajan is habitual in Southern Asia, particularly India, where it is an extremely rare surname. Much more prevalently, Nerajan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Nerajan | India |
Balan, Kumar, and Srikantharajah