Throughout the world, Gustavo Baltazar (Gustavo Baltazar 
) is a very rare boy's given name. The forename Gustavo Baltazar is habitual in Latin America and the Caribbean, particularly Chile, where it is a very rare masculine name, and Peru. Much less frequently, Gustavo Baltazar is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Gustavo Baltazar | Chile, Peru, Ecuador |