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Family name Thông (Thong , Thông , Тхонг ) , across the world, is a common last name. The cognomen Thông is habitual in South-eastern Asia, particularly Malaysia, where it is quite a common surname, Singapore, and Laos. Measured by absolute frequency, this name is the most popular in South-eastern Asia, particularly Malaysia, Vietnam, and Indonesia. Likewise, Thông is the forename as well as the last name.