Surname Fidencio (Fidencio 
) , in the entire world, is a common cognomen. The surname Fidencio is characteristic of Latin America and the Caribbean, particularly Mexico, where it is quite a common surname, Honduras, where it is quite a rare surname, and Nicaragua. Measured by absolute frequency, it is the most numerous in Latin America and the Caribbean, particularly Mexico, Brazil, and Honduras. Likewise, Fidencio is the forename as well as the last name.