Last name ดุ่ย (Dui 
, ดุ่ย) , across the world, is quite a common family name. The family name ดุ่ย is characteristic of Taiwan, where it is quite a common surname, Malaysia, where it is quite a rare surname, and Italy, where it is a rare surname. In absolute terms, this name is the most popular in Taiwan, India, and China. Likewise, ดุ่ย is the forename as well as the last name.