Surname Orsia (Orsia 
) , worldwide, is a very rare cognomen. The last name Orsia is characteristic of Greece, where it is a rare surname, Philippines, where it is a very rare surname, and the United States, where it is an extremely rare surname. More frequently, Orsia is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Orsia | United States, Philippines, Greece, Democratic Republic of the Congo, Brazil |