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Surname Alauddin (Alauddin , Алауддин ) , worldwide, is a common cognomen. The family name Alauddin is habitual in Western Asia, particularly Oman, where it is quite a common surname, Bahrain, and Qatar (explore the name in all countries). Not in comparison with a country's population, this name is the most popular in Bangladesh, India, and Saudi Arabia. More frequently, Alauddin is the forename as well as the last name.