Family name Mariana Justina (Mariana Justina 
) , across the world, is an extremely rare last name. The family name Mariana Justina is characteristic of Latin America and the Caribbean, particularly Chile, where it is an extremely rare surname. Much more frequently, Mariana Justina is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Mariana Justina | Chile, Peru, Ecuador |