Last name ม่อย (Moi 
, ม่อย) , around the globe, is a common cognomen. The surname ม่อย is habitual in Malaysia, where it is a common surname, Brunei, where it is quite a common surname, and Papua New Guinea (explore the name in all countries). Measured by absolute frequency, this name is the most popular in Malaysia, Indonesia, and Kenya. Very seldom, ม่อย is the forename as well as the last name.