Family name Otto Emilio (Otto Emilio 
) , in the world, is an extremely rare last name. The family name Otto Emilio is habitual in Latin America and the Caribbean, particularly Chile, where it is an extremely rare surname. Much more prevalently, Otto Emilio is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Otto Emilio | Brazil, Peru, Chile, Ecuador, Costa Rica |