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Cognomen Berko (Berko , ברקו , Берко ) , across the world, is a common family name. The last name Berko is habitual in Ghana, where it is quite a common surname, Israel, and Hungary, where it is quite a rare surname. Not in comparison with a country's population, this name is the most popular in Ghana, Israel, and Ukraine. Much less frequently, Berko is the forename as well as the last name.