Cognomen Orsilia (Orsilia 
) , across the world, is an extremely rare family name. The last name Orsilia is characteristic of Spain, where it is a very rare surname, Honduras, and Venezuela, where it is an extremely rare surname. Measured by absolute frequency, it is the most numerous in Spain, Mexico, and Honduras. Much more prevalently, Orsilia is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Orsilia | South Africa, Mexico, Brazil, Spain, Democratic Republic of the Congo |