Family name ห้วยทราย (Huisai 
, ห้วยทราย, Hueysai ) , across the world, is a rare cognomen. The cognomen ห้วยทราย is habitual in South-eastern Asia, particularly Thailand, where it is a rare surname, and Malaysia, where it is a very rare surname. Much less frequently, ห้วยทราย is the forename as well as the last name.