Family name Robert Oscar (Robert Oscar 
) , in the entire world, is an extremely rare last name. The last name Robert Oscar is characteristic of Latin America and the Caribbean, particularly Chile, where it is an extremely rare surname. Much more prevalently, Robert Oscar is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Robert Oscar | Canada, Peru, Ecuador, Chile, United States |
Morales, and Rivera Onofre