Cognomen Margarita Eugenia (Margarita Eugenia 
) , worldwide, is a rare last name. The cognomen Margarita Eugenia is habitual in Chile, where it is quite a rare surname, and Spain, where it is a very rare surname. More prevalently, Margarita Eugenia is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Margarita Eugenia | Peru, Chile, Ecuador, Costa Rica, El Salvador |