Throughout the world, Rosario Sonia (Rosario Sonia 
) is a very rare female given name. The forename Rosario Sonia is habitual in Latin America and the Caribbean, particularly Peru, where it is a rare feminine name. Much less frequently, Rosario Sonia is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Rosario Sonia | Spain, Philippines, Chile, Ecuador, Peru |