Cognomen Ieu (អ៊ាវ 
, Ieu 
, Аю 
) , throughout the world, is quite a rare last name. The surname Ieu is habitual in Cambodia, where it is quite a common surname, Malaysia, where it is a very rare surname, and Kyrgyzstan. Measured by absolute frequency, this name is the most popular in Cambodia, Indonesia, and China. Very seldom, Ieu is the forename as well as the last name.