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Family name Kahana (Kahana , כהנא , Кахана ) , in all the world, is quite a rare last name. The surname Kahana is habitual in Israel, where it is quite a common surname, Namibia, where it is quite a rare surname, and Tanzania. Measured by absolute frequency, the name is most common in Israel, Tanzania, and the United States. Very seldom, Kahana is the forename as well as the last name.