Family name Claudio Antonio (Claudio Antonio 
) , around the world, is quite a rare surname. The cognomen Claudio Antonio is characteristic of Chile, where it is quite a common surname, and Spain, where it is a rare surname. More prevalently, Claudio Antonio is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Claudio Antonio | Cuba, Ecuador, Costa Rica, Peru, Chile |