Last name Monterio (Monterio 
) , around the world, is quite a rare family name. The last name Monterio is characteristic of Kuwait, where it is a rare surname, Panama, and United Arab Emirates. Measured by absolute frequency, it is commonest in India, the United States, and Malaysia. Very seldom, Monterio is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Monterio | Portugal, Malaysia, United States, India, Brazil |