Cognomen Loreto Eugenia (Loreto Eugenia 
) , worldwide, is a very rare family name. The surname Loreto Eugenia is habitual in Latin America and the Caribbean, particularly Chile, where it is a rare surname. More frequently, Loreto Eugenia is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Loreto Eugenia | Chile, Spain |