Cognomen Arrumugam (Arrumugam 
) , worldwide, is a rare family name. The cognomen Arrumugam is characteristic of Malaysia, where it is a rare surname, China, where it is an extremely rare surname, and India. Very seldom, Arrumugam is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Arrumugam | China, Malaysia, India, South Africa |