Around the globe, Isaac Gustavo (Isaac Gustavo 
) is a very rare boy's given name. The first name Isaac Gustavo is characteristic of Latin America and the Caribbean, particularly Chile, where it is a very rare masculine name, and Peru. Very seldom, Isaac Gustavo is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Isaac Gustavo | Peru, Chile, Mexico, Ecuador, Costa Rica |