Surname Ljaj (Lai 
, Ljaj 
) , all over the world, is a widespread cognomen. The last name Ljaj is characteristic of Hong Kong, where it is a prevalent surname, Macao, where it is a widespread surname, and Bermuda (explore the name in all countries). In absolute terms, it is commonest in China, Malaysia, and Hong Kong. Very seldom, Ljaj is the forename as well as the last name.