Cognomen S Ramaisvaran (S Ramaisvaran 
) , around the world, is an extremely rare surname. The family name S Ramaisvaran is habitual in South-eastern Asia, particularly Malaysia, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| S Ramaisvaran | Malaysia |
Vinisa, Ruben Raj, and Vaisshnavi