Cognomen Retanam (Retanam 
) , around the globe, is a rare family name. The surname Retanam is habitual in Malaysia, where it is a rare surname, and Canada, where it is an extremely rare surname. Very seldom, Retanam is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Retanam | Malaysia, Canada, India |