Cognomen ห่าย (Hai 
, ห่าย) , around the globe, is a widespread surname. The last name ห่าย is habitual in Malaysia, where it is quite a common surname, Macao, and Israel (explore the name in all countries). In absolute terms, it is the most numerous in China, Malaysia, and Vietnam. Also, ห่าย is the forename as well as the last name.