Family name Giannes (Giannes 
) , all around the world, is a rare last name. The cognomen Giannes is habitual in Greece, where it is a rare surname, Australia, where it is a very rare surname, and Germany, where it is an extremely rare surname. In absolute terms, this name is the most popular in Greece, Australia, and the United States. Very seldom, Giannes is the forename as well as the last name.