Surname ซุ่ย (Sui 
, ซุ่ย) , in the world, is a widespread last name. The last name ซุ่ย is habitual in Mongolia, where it is a widespread surname, Malaysia, where it is quite a common surname, and Cayman Islands (explore the name in all countries). Measured by absolute frequency, the name is most common in China, Mongolia, and Malaysia. Very seldom, ซุ่ย is the forename as well as the last name.