Cognomen Ignacio Antonio (Ignacio Antonio 
) , in all the world, is quite a rare family name. The cognomen Ignacio Antonio is habitual in Chile, where it is quite a rare surname, and Spain, where it is a rare surname. More frequently, Ignacio Antonio is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ignacio Antonio | Mexico, Costa Rica, Ecuador, Spain, Chile |