Surname זאו (Zao 
, זאו 
) , across the world, is quite a common last name. The family name זאו is habitual in Cameroon, where it is quite a rare surname, the Democratic Republic of the Congo, where it is a rare surname, and Hong Kong. Measured by absolute frequency, the name is most common in China, the Democratic Republic of the Congo, and India. Much less frequently, זאו is the forename as well as the last name.