Surname Fidensio (Fidensio 
) , in all the world, is a very rare last name. The family name Fidensio is characteristic of Latin America and the Caribbean, particularly Mexico, where it is a very rare surname, Nicaragua, and Argentina, where it is an extremely rare surname. Likewise, Fidensio is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Fidensio | Mexico, Argentina, Peru, United States, Nicaragua |