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Surname Kumru (Kumru ) , in the entire world, is a common last name. The family name Kumru is habitual in Turkey, where it is quite a common surname, Azerbaijan, where it is quite a rare surname, and Estonia, where it is a rare surname. Not in comparison with a country's population, the name is most common in Turkey, Azerbaijan, and Germany. Also, Kumru is the forename as well as the last name.