Surname Mariana Eufemia (Mariana Eufemia 
) , in the world, is an extremely rare family name. The cognomen Mariana Eufemia is habitual in Latin America and the Caribbean, particularly Chile, where it is an extremely rare surname. Much more frequently, Mariana Eufemia is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Mariana Eufemia | Chile, Peru, Ecuador |