Surname Gianni Antonio (Gianni Antonio 
) , across the world, is an extremely rare family name. The last name Gianni Antonio is characteristic of Latin America and the Caribbean, particularly Chile, where it is a very rare surname, and Venezuela, where it is an extremely rare surname. More frequently, Gianni Antonio is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Gianni Antonio | Philippines, Italy, Venezuela, Chile, Ecuador |