Cognomen Maria-Rosario (Maria-Rosario 
) , throughout the world, is a very rare surname. The last name Maria-Rosario is habitual in Southern Europe, particularly Spain, where it is a very rare surname. More frequently, Maria-Rosario is the forename as well as the last name. Parts of the name also exists independently as a first name Maria, and a first name Rosario.
| VARIANT | COUNTRY |
|---|---|
| Maria-Rosario | Germany, Spain, United States, India, France |