Cognomen Gidio (Gidio 
) , in the world, is a very rare last name. The last name Gidio is habitual in Latin America and the Caribbean, particularly Brazil, where it is a very rare surname, Honduras, and Chile, where it is an extremely rare surname. In absolute terms, it is commonest in Brazil, Mexico, and the United States. More frequently, Gidio is the forename as well as the last name.