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Last name Sahan (Sahan , Сахан , Саган ) , worldwide, is a common surname. The surname Sahan is characteristic of Sri Lanka, where it is quite a common surname, Ukraine, where it is quite a rare surname, and Qatar. Not in comparison with a country's population, the name is most common in India, Ukraine, and Sri Lanka. More prevalently, Sahan is the forename as well as the last name.