LEF

LEF or Lef may refer to:

• LEF (journal), a 1920s Soviet journal of aesthetics
• L.E.F., a 2006 album by Ferry Corsten
• Lef, or Guts, a 1999 Dutch comedy film

• LEF – For the New Generation, a political party in the Netherlands
• Leading Edge Forum, a British consulting company
• Legal Education Foundation, a British grant-making foundation
• Life Extension Foundation, now the Biomedical Research & Longevity Society, an American organization

• Library Exchange Format, an integrated circuit design format
• Luquillo Experimental Forest, a UNESCO Biosphere Reserve in Puerto Rico
• Lymphoid enhancer-binding factor 1, a protein in humans

• Lef Nosi (1877–1946), Albanian publisher, archivist, philologist, and ethnographer