Family name Iaou (Ewe 
, Iaou) , throughout the world, is quite a common cognomen. The surname Iaou is habitual in Malaysia, where it is quite a rare surname, Singapore, and the Democratic Republic of the Congo. Not in comparison with a country's population, it is the most numerous in Malaysia, the Democratic Republic of the Congo, and Nigeria. Very seldom, Iaou is the forename as well as the last name.