Family name גיאו (Gyau 
, גיאו 
) , worldwide, is quite a rare last name. The surname גיאו is habitual in Ghana, where it is quite a common surname, Senegal, where it is a rare surname, and Sweden. Not in comparison with a country's population, the name is most common in Ghana, Senegal, and the United States. Very seldom, גיאו is the forename as well as the last name.