Cognomen Soundrarajan (Soundrarajan 
) , in all the world, is a rare family name. The cognomen Soundrarajan is habitual in Malaysia, where it is a rare surname, Canada, where it is an extremely rare surname, and Germany. Measured by absolute frequency, this name is the most popular in India, Malaysia, and China. Also, Soundrarajan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Soundrarajan | Germany, United States, India, Malaysia, China |