Cognomen Mertam (Mertam 
) , in the world, is a very rare last name. The last name Mertam is characteristic of Hungary, where it is a very rare surname, and the United States, where it is an extremely rare surname. Very seldom, Mertam is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Mertam | United States, Hungary |