In the world, Gaion (Gaion 
) is a very rare epicene forename. The first name Gaion is characteristic of Southern Europe, particularly Italy, where it is a very rare gender-neutral name. Much more frequently, Gaion is the last name as well as the forename.
Mr, Elza, Vera, Ivan, Maria, Mario, Marta, Marco, Marly, Mauro, Maura, Meire, Sueli, Suzel, Sonia, Aline, Alini, Andre, Adail, Carlo, Cesar, Cenio, Elen, Joã, Joao, Josy, Ms, Ju, Ana, Ary, Lea, Mara, Sara, Suzy, Alef, Anna, Bruno, Raul, Rino, Ruth, Gino, Lara, Leni, Luca, Luis, Luiz, Luan, Jose, Rosa, and Bruna