Cognomen ฮ้อย (Hoi 
, ฮ้อย) , all over the world, is a common family name. The family name ฮ้อย is habitual in Macao, where it is a widespread surname, Malaysia, where it is quite a common surname, and Hong Kong (explore the name in all countries). In absolute terms, it is commonest in Malaysia, Japan, and Macao. Also, ฮ้อย is the forename as well as the last name.