Surname Claudia Antonia (Claudia Antonia 
) , globally, is a rare last name. The cognomen Claudia Antonia is habitual in Chile, where it is a rare surname, and Spain. More prevalently, Claudia Antonia is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Claudia Antonia | Romania, Peru, Spain, Chile, Ecuador |