Surname Alvaro Arnoldo (Alvaro Arnoldo 
) , all over the world, is an extremely rare family name. The cognomen Alvaro Arnoldo is characteristic of Latin America and the Caribbean, particularly Chile, where it is a very rare surname. More prevalently, Alvaro Arnoldo is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Alvaro Arnoldo | Chile, Peru, Costa Rica |