Surname John Gustavo (John Gustavo 
) , across the world, is an extremely rare family name. The cognomen John Gustavo is characteristic of Latin America and the Caribbean, particularly Chile, where it is a very rare surname. Much more frequently, John Gustavo is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| John Gustavo | Chile, Spain, Peru, Ecuador |