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Surname Htoon (Htoon , ตูน ) , in all the world, is a common family name. The last name Htoon is habitual in Myanmar, where it is quite a common surname, Singapore, where it is quite a rare surname, and United Arab Emirates, where it is a rare surname. Not in comparison with a country's population, it most frequently occurs in Myanmar, Indonesia, and South Korea. Very seldom, Htoon is the forename as well as the last name.