Cognomen Olga Rosario (Olga Rosario 
) , globally, is a very rare family name. The surname Olga Rosario is habitual in Chile, where it is a rare surname, and Spain, where it is a very rare surname. More frequently, Olga Rosario is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Olga Rosario | Chile, Peru, Mexico, Ecuador, Spain |
Soto, Fernandez, Gutierrez, Marzal Grados, Gonzales, Castillo, Martinez, Vasquez, Aguilar, Sanchez, Quiche, Quispe, Torres, Tarqui, Garcia, Mendiola Pineda, Romero, Acosta, Muñoz, Ortiz, Tello, Lopez, Legua, Gomez, Rojas, Peña, Perez, Avila, Silva, Diaz, Arce, Cerdan, and Castillo Saavedra