Family name Saunthararajan (Saunthararajan 
) , globally, is a rare cognomen. The surname Saunthararajan is habitual in Sri Lanka, where it is a rare surname, Malaysia, where it is a very rare surname, and France, where it is an extremely rare surname. Likewise, Saunthararajan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Saunthararajan | India, Sri Lanka, France, Malaysia |