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Cognomen Eliav (אליאב , Eliav ) , in all the world, is a rare last name. The surname Eliav is habitual in Israel, where it is quite a rare surname, Malta, and Hungary, where it is a rare surname. In absolute terms, it is commonest in Israel, the United States, and Hungary. Likewise, Eliav is the forename as well as the last name.