LEM

LEM may refer to:

• LEM, a musical instrument with the brand name Generalmusic
• Lake Erie Monsters (now the Cleveland Monsters), a professional ice hockey team based in Ohio
• Lamina emergent mechanism, found in pop-up books
• Law of excluded middle, in classical logic
• Lay Eucharistic Minister, in the Catholic, Episcopal or Lutheran Churches
• Learnable Evolution Model, an evolutionary computation method
• LEM domain-containing protein 3, a membrane protein associated with laminopathies
• Leyton Midland Road railway station in the United Kingdom, station code LEM
• Liquid Elastomer Molding, a gasket technology developed by the Federal-Mogul Corporation
• Luís Eduardo Magalhães, a city in the state of Bahia, Brazil
• Lunar Excursion Module, the original designation of the Apollo Lunar Module
• Lymphocyte expansion molecule