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Family name Toong (Toong , ตุ้ง) , throughout the world, is quite a common surname. The surname Toong is habitual in South-eastern Asia, particularly Malaysia, where it is quite a common surname, Singapore, where it is quite a rare surname, and Philippines, where it is a rare surname. In absolute terms, it most frequently occurs in Malaysia, Philippines, and China. Much less frequently, Toong is the forename as well as the last name.