All around the world, Isaias Gustavo (Isaias Gustavo 
) is a very rare masculine given name. The given name Isaias Gustavo is characteristic of Latin America and the Caribbean, particularly Chile, where it is a very rare boy's name. Much less frequently, Isaias Gustavo is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Isaias Gustavo | Mexico, Costa Rica, Peru, Ecuador, Chile |