Globally, Julio Arnoldo (Julio Arnoldo 
) is a rare male forename. The forename Julio Arnoldo is characteristic of Latin America and the Caribbean, particularly Chile, where it is a rare masculine name, and Costa Rica. Very seldom, Julio Arnoldo is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Julio Arnoldo | Argentina, Spain, Chile, Ecuador, Costa Rica |