Cognomen Olerio (Olerio 
) , around the globe, is a rare last name. The last name Olerio is habitual in Philippines, where it is a very rare surname, the United States, where it is an extremely rare surname, and Mexico. Likewise, Olerio is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Olerio | Philippines, Mexico, United States, Brazil, Venezuela |