Family name Susan Rosario (Susan Rosario 
) , all around the world, is an extremely rare last name. The cognomen Susan Rosario is habitual in Latin America and the Caribbean, particularly Chile, where it is an extremely rare surname. Much more frequently, Susan Rosario is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Susan Rosario | Chile, Peru, Philippines |