Surname 치우 (Chiu 
, 치우 
) , throughout the world, is a widespread cognomen. The surname 치우 is habitual in Hong Kong, where it is a widespread surname, Cayman Islands, where it is a common surname, and Bermuda (explore the name in all countries). Measured by absolute frequency, it is commonest in Eastern Asia, particularly Hong Kong, Taiwan, and China. Very seldom, 치우 is the forename as well as the last name.