LEF

LEF may refer to:

LEF

 * LEF, the Laymen's evangelical fellowship, a Christian organization
 * LEF, the Leading Edge Forum, a research and advisory service
 * LEF, the Lymphoid enhancer-binding factor 1
 * L.E.F., a 2006 album by Ferry Corsten
 * LEF (journal), a journal of aesthetics published in the Soviet Union in the 1920s
 * LEF – For the New Generation, a political party in the Netherlands
 * The Legal Education Foundation
 * Library Exchange Format in Electronic design automation domain
 * Liberté, égalité, fraternité, the national motto of France
 * Life Extension Foundation, a non-profit organization
 * Luquillo Experimental Forest, UNESCO Biosphere Reserve in Puerto Rico
 * LEF – For the New Generation, Dutch political party

Lef
Lef means guts, courage in Dutch. It may also refer to:
 * Lef, a 1999 Dutch comedy film directed by Ron Termaat