Family name Antoñia (Antoñia 
) , in all the world, is an extremely rare last name. The surname Antoñia is characteristic of Southern Europe, particularly Spain, where it is a very rare surname. Likewise, Antoñia is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Antoñia | Mexico, Chile, Spain, Peru |