Family name Fidencio Antonio (Fidencio Antonio 
) , throughout the world, is an extremely rare cognomen. The family name Fidencio Antonio is characteristic of Latin America and the Caribbean, particularly Chile, where it is an extremely rare surname. Much more prevalently, Fidencio Antonio is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Fidencio Antonio | Peru, Ecuador, Chile, Costa Rica |