Family name หลั่ง (Lang 
, หลั่ง) , worldwide, is a widespread surname. The family name หลั่ง is habitual in Marshall Islands, where it is a common surname, Austria, and Germany (explore the name in all countries). In absolute terms, it most frequently occurs in China, Germany, and the United States. Much less frequently, หลั่ง is the forename as well as the last name.