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