Cognomen Kirusnan (Kirusnan 
) , across the world, is quite a rare last name. The family name Kirusnan is habitual in India, where it is a very rare surname, and Malaysia. Much more frequently, Kirusnan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kirusnan | Malaysia, India |
Vi, Eca, and Nalathamby