Throughout the world, Mariano Juan (Mariano Juan 
) is a rare male given name. The first name Mariano Juan is characteristic of Peru, where it is a rare boy's name, Spain, where it is a very rare masculine name, and Chile. Very seldom, Mariano Juan is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Mariano Juan | Spain, Argentina, Peru, Chile, Ecuador |