Cognomen ジオ (Gio 
, Jio 
, Giò 
) , in the world, is a common surname. The family name ジオ is characteristic of Malaysia, where it is quite a common surname, Georgia, where it is quite a rare surname, and Italy. Not in comparison with a country's population, it most frequently occurs in Indonesia, Malaysia, and Italy. Likewise, ジオ is the forename as well as the last name.