Globally, Modesto Antonio (Modesto Antonio 
) is a rare boy's first name. The first name Modesto Antonio is characteristic of Latin America and the Caribbean, particularly Chile, where it is a rare male name, the Dominican Republic, and Peru. Much less frequently, Modesto Antonio is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Modesto Antonio | Spain, Dominican Republic, Peru, Chile, Ecuador |