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Last name Keyser (凯泽 , Keyser , Кейзер ) , across the world, is a common surname. The family name Keyser is habitual in Belgium, where it is quite a common surname, Namibia, where it is quite a rare surname, and South Africa. Not in comparison with a country's population, it most frequently occurs in the United States, Belgium, and China. Also, Keyser is the forename as well as the last name.