Cognomen Rahavan (Rahavan 
) , worldwide, is a rare family name. The family name Rahavan is habitual in Malaysia, where it is a rare surname, Australia, where it is a very rare surname, and Canada, where it is an extremely rare surname. Measured by absolute frequency, it is commonest in Malaysia, India, and Australia. Very seldom, Rahavan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Rahavan | Australia, United States, United Kingdom, India, Malaysia |