Cognomen Mejon (Mejon 
) , in the world, is a very rare surname. The cognomen Mejon is habitual in Uruguay, where it is a rare surname, Malaysia, and Tanzania, where it is a very rare surname. Also, Mejon is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Mejon | Spain, Uruguay, Tanzania, Malaysia, India |