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Around the world, หลัง (Lang , หลัง , Aftr) is quite a common unisex forename. The forename หลัง is characteristic of Gambia, where it is quite a common male name, Hong Kong, where it is quite a rare gender-neutral name, and Senegal, where it is quite a rare boy's name. In absolute terms, the name is most common in the United States, Vietnam, and Indonesia. More frequently, หลัง is the last name as well as the forename.
หลัง is also a name for the fictitious and mythical characters: Lang Sengguan , the Jin Ping Mei character.