Cognomen Eruthayam (Eruthayam 
) , around the globe, is a very rare surname. The cognomen Eruthayam is habitual in Malaysia, where it is a rare surname, and New Zealand, where it is a very rare surname. Much less frequently, Eruthayam is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Eruthayam | New Zealand, India, Malaysia |