In the entire world, Marcelo Antonio (Marcelo Antonio 
) is a common boy's given name. The first name Marcelo Antonio is habitual in Latin America and the Caribbean, particularly Chile, where it is quite a common masculine name, Costa Rica, where it is quite a rare masculine name, and Bolivia, where it is a rare male name. Not in comparison with a country's population, it is the most numerous in Chile, Angola, and Peru. Very seldom, Marcelo Antonio is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Marcelo Antonio | Peru, Spain, Chile, Angola, Ecuador |