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Cognomen Leef (利夫 , Leef , Ліф ) , in the world, is a rare family name. The last name Leef is characteristic of New Zealand, where it is quite a rare surname, Israel, where it is a rare surname, and Australia. In absolute terms, it is commonest in the United States, China, and New Zealand. Likewise, Leef is the forename as well as the last name.