Surname Sundiram (Sundiram 
) , in all the world, is a very rare last name. The cognomen Sundiram is habitual in Malaysia, where it is a very rare surname, and the United Kingdom, where it is an extremely rare surname. Also, Sundiram is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sundiram | United Kingdom, India, Malaysia |