Cognomen Alexander Gustavo (Alexander Gustavo 
) , in the world, is a very rare last name. The last name Alexander Gustavo is habitual in Latin America and the Caribbean, particularly Chile, where it is a very rare surname. More prevalently, Alexander Gustavo is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Alexander Gustavo | Argentina, Costa Rica, Peru, Ecuador, Chile |