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In all the world, Lef (לב , Lef , Леф ) is a rare predominantly male, but very infrequently girly first name. The given name Lef is habitual in Greece, where it is quite a rare male name, Israel, where it is a rare unisex name, and Belgium, where it is a very rare masculine name. Not in comparison with a country's population, it most frequently occurs in Greece, Israel, and China. Likewise, Lef is the last name as well as the forename.
Lef is also a name for the fictitious and mythical characters: Lev , the fictional character from the video game The Last of Us Part II; Prince Myshkin , the fictional character of Dostoevsky, The Idiot; Takeshi Kovacs , the fictional character, Altered Carbon; Fürst Leo Nikolajewitsch Myschkin , the operatic character in the opera Der Idiot (Weinberg), The Idiot and Lev Abalkin .