Cognomen Rivas Rosario (Rivas Rosario 
) , all around the world, is a very rare surname. The last name Rivas Rosario is habitual in Latin America and the Caribbean, particularly the Dominican Republic, where it is a rare surname, and Ecuador, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Rivas Rosario | Ecuador, Dominican Republic |