Cognomen Proscia (Proscia 
) , in the entire world, is quite a rare last name. The cognomen Proscia is characteristic of Italy, where it is quite a rare surname, the United States, where it is a rare surname, and New Zealand. In absolute terms, it most frequently occurs in Italy, the United States, and Argentina. Much less frequently, Proscia is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Proscia | Italy, United States, Argentina, Canada, Venezuela |