Cognomen Oroso (Oroso 
) , in the entire world, is a rare last name. The surname Oroso is characteristic of Philippines, where it is a rare surname, Nigeria, where it is a very rare surname, and Italy. Not in comparison with a country's population, it is commonest in Philippines, Nigeria, and Mexico. Very seldom, Oroso is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Oroso | Mexico, Brazil, Italy, Philippines, Nigeria |