Surname ช่าง (Chang 
, Mechanic 
, Mechang 
) , globally, is a prevalent cognomen. The cognomen ช่าง is characteristic of Marshall Islands, where it is a widespread surname, Macao, and Taiwan, where it is a common surname (explore the name in all countries). Not in comparison with a country's population, it is the most numerous in China, Taiwan, and the United States. Very seldom, ช่าง is the forename as well as the last name.