Cognomen Mariella Janeth (Mariella Janeth 
) , worldwide, is an extremely rare family name. The cognomen Mariella Janeth is characteristic of Latin America and the Caribbean, particularly Chile, where it is an extremely rare surname. Much more prevalently, Mariella Janeth is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Mariella Janeth | Peru, Ecuador, Chile |