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Last name Lef (לב , Lef , Леф ) , in all the world, is quite a rare family name. The last name Lef is habitual in Israel, where it is quite a common surname, Algeria, where it is quite a rare surname, and Greece, where it is a rare surname. Not in comparison with a country's population, the name is most common in Israel, Algeria, and France. Also, Lef is the forename as well as the last name.