Surname S Shunmugam (S Shunmugam 
) , in the world, is an extremely rare last name. The family name S Shunmugam is characteristic of South-eastern Asia, particularly Malaysia, where it is a very rare surname. More frequently, S Shunmugam is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| S Shunmugam | Malaysia |
Shunmugam, Sethuraman, and Singaravellu