Surname มุ่ย (Mui 
, มุ่ย, Mhui ) , across the world, is a common last name. The cognomen มุ่ย is characteristic of Macao, where it is quite a common surname, Malaysia, and Hong Kong (explore the name in all countries). Not in comparison with a country's population, this name is the most popular in Malaysia, Hong Kong, and the United States. Also, มุ่ย is the forename as well as the last name.